【題目】 The Mars 2020 rover(02W), which sets off for the Red Planet this year, will not only search for traces of ancient life, but pave the way for future human missions, NASA scientists said Friday as they introduced the vehicle.

The rover has been constructed in a large, sterile room at the Jet Propulsion Laboratory in Pasadena, near Los Angeles, where its driving equipment was given its first successful test last week.

Shown to invited journalists on Friday, it is scheduled to leave Earth in July 2020 from Floridas Cape Canaveral, becoming the fifth US rover to land on Mars seven months later in February.

“It's designed to seek the signs of life, so we’re carrying a number of different instruments that will help us understand the geological and chemical context on the surface of Mars,” deputy mission leader Matt Wallace told AFP.

Among the devices on board the rover are 23 cameras, two “ears” that will allow it to listen to Martian winds, and lasers used for chemical analysis.

Approximately the size of a car, the rover is equipped with six wheels like the former US rover, Curiosity, allowing it to travel along rocky land.

Speed is not a priority for the vehicle, which only has to cover around 200 yards(180 metres) per Martian day -approximately the same as a day on Earth.

Fuelled by a tiny nuclear reactor, Mars 202(has seven-foot-long(2 metres) articulated arms and a drill to crack open rock samples in locations scientists identify as potentially suitable for life.

We are hoping to move fairly quickly. We'd like to see the next mission launched in 2026 which will get to Mars and pick up the samples, put them into a rocket and finally bring them back to the Earth, "said Wallace. NASA’s Mars 2020 will remain active for at least one Martian year, which is around two years on Earth.

【1】What does the underlined part “pave the way” in Paragraph 1 mean?

A.Making preparationsB.Finding suitable landing sites

C.Setting up research centers.D.Constructing roads.

【2】What can we know about the Mars 2020 rover?

A.It looks much like a car with six wheels.

B.It is an updated of the US rover Curiosity.

C.It is solar-powered and can crack open rock samples.

D.It is able to perform different tasks on Mars in search of the signs of life

【3】If you search the passage on the website of China Daily, where can you probably find it?

A.LifestyleB.Regional

C.WorldD.Culture

【4】What is the main idea of the passage?

A.The Mars 2020 rover has successfully passed its first driving test.

B.NASA is planning a new round of space exploration

C.Future human missions on Mars are on the way

D.A new rover will be launched to carry out scientific research on Mars

【答案】

【1】A

【2】D

【3】C

【4】D

【解析】

這是一篇新聞報道。文章主要說明了美國宇航局科學家上周五介紹火星2020漫游者（02W）時表示，今年啟程前往火星，它不僅將尋找古代生命的痕跡，而且將為未來的人類任務做好準備。同時介紹了這一款火星探測器的一些情況。

【1】

詞義猜測題。結(jié)合后文for future human missions可知火星2020漫游者不僅將尋找古代生命的痕跡，而且將為未來的人類任務做好準備。由此可知，劃線短語“pave the way”意思為“做好準備”。故選A。

【2】

細節(jié)理解題。根據(jù)第四段“It's designed to seek the signs of life, so we’re carrying a number of different instruments that will help us understand the geological and chemical context on the surface of Mars,” deputy mission leader Matt Wallace told AFP.可知“這是為了尋找生命跡象而設計的，所以我們攜帶了許多不同的儀器，這些儀器將幫助我們了解火星表面的地質(zhì)和化學環(huán)境，”副任務負責人Matt Wallace告訴法新社。由此可知，火星2020漫游者能夠在火星上執(zhí)行不同的任務，尋找生命的跡象。故選D。

【3】

推理判斷題。根據(jù)文章主要說明了美國宇航局科學家上周五介紹火星2020漫游者（02W）時表示，今年啟程前往火星，它不僅將尋找古代生命的痕跡，而且將為未來的人類任務做好準備。同時介紹了這一款火星探測器的一些情況。這屬于國外科技類文章，結(jié)合選項可推知，如果你在中國日報的網(wǎng)站上搜索這篇文章，你可能會在“World(世界)”部分找到它。故選C。

【4】

主旨大意題。根據(jù)第一段The Mars 2020 rover(02W), which sets off for the Red Planet this year, will not only search for traces of ancient life, but pave the way for future human missions, NASA scientists said Friday as they introduced the vehicle.可知美國宇航局科學家上周五介紹火星2020漫游者（02W）時表示，今年啟程前往火星，它不僅將尋找古代生命的痕跡，而且將為未來的人類任務做好準備。同時介紹了這一款火星探測器的一些情況。由此可知，這篇文章的主旨是一個新的漫游者將被發(fā)射到火星上進行科學研究。故選D。

練習冊系列答案
相關(guān)習題

科目：高中英語 來源： 題型：

【題目】 The victims were carried in one by one, their paws burned and fur burnt, suffering from dehydration (脫水) and fear. Their caretakers bandaged (用繃帶包扎) their wounds and laid them in baskets with the only thing that was familiar — the leaves of a eucalyptus (桉樹) tree. As fires have burned more than two million acres in Australia, dozens of koalas have been rescued from burned trees and pale ground. The animals are being treated in rescue centers, and at least one private home, along the country’s east coast.

The difficult situation of the koala — a national symbol of Australia — has raised questions among environmentalists and scientists about what it will take to protect biodiversity (生物多樣性) in a country with intense fire, extreme heat and lack of water. Australia has already been among the highest rates of species extinction in the world.

The bad situation goes beyond koalas. Recently, tens of thousands of bats fell from the sky in temperatures over 107 degrees Fahrenheit in northern Australia. Kangaroos destroyed the grapes in Canberra because of drought.

“Climate change and other human impacts have so changed the situation that the government needs to rethink its way to protect at once,” Dr. Bowman said, suggesting interventions (干預) like irrigating, feeding and moving animals to new places.

Koalas, unlike kangaroos, birds or snakes, do not escape from fires. Therefore, though the fires are still burning, a rescue team began to search the area carefully. Walking in a human chain, they looked up to the tree top, searching for survivors.

【1】What do the victims in the first paragraph refer to?

A.Animals injured in fires.

B.Kangaroos driven by drought.

C.Bats that fell from the sky.

D.Koalas rescued from the fire.

【2】Which of the following may cause the extinction of wildlife?

A.Wildfires that seldom happened.

B.Extreme hot weather in Australia.

C.The never-changing climate in Australia.

D.Not having enough money to take measures in Australia.

【3】What can we draw from Dr. Bowman?

A.Human activities have little influence on animals.

B.The government should take immediate action.

C.The government does not care about the wild animals.

D.Scientists are concerned about the bad situation of wildlife.

【4】What’s the best title for the text?

A.Saving the Fire Victims Who Cannot Escape: Australia’s Koalas

B.Saving the Endangered Wild Animals in Australia

C.Actions Needed to Protect Habitat for Koalas

D.National Symbol of Australia Needs Rescue

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】What ____ an excellent player from an average one is that the former learns from his errors, while the latter repeats them.

A.definesB.describesC.differentiatesD.discourages

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】 Why elephants rarely get cancer is a mystery that has confused scientists for decades. A study led by researchers at Huntsman Cancer Institute (HCI), at the University of Utah and Arizona State University may have found the answer.

According to the results, elephants have 38 additional modified copies of a gene that encodes p53, a definite tumor suppressor, as compared to humans, who have only two. Further, elephants may have a more powerful mechanism for killing damaged cells that are at risk for becoming cancerous. In isolated elephant cells, this activity is doubled compared to healthy human cells, and five times that of cells from patients with Li-Fraumeni Syndrome, who have only one working copy of p53 and more than a 90 percent lifetime cancer risk in children and adults. The results suggest extra p53 could explain elephants’ increased resistance to cancer.

“Nature has already figured out how to prevent cancer. It’s up to us to learn how different animals overcome the problem so we can adapt those strategies to prevent cancer in people,” says co-senior author Joshua Schiffman, M.D., pediatric oncologist (兒科腫瘤醫(yī)生) at Huntsman Cancer Institute, University of Utah School of Medicine.

But Prof Mel Greaves, from the Institute of Cancer Research in London, says we should focus on why humans have such high levels of cancer. He pointed to the rise of unhealthy, cancer-causing behaviors, such as obesity and sunbathing. “You’ve never seen an elephant smoke!” he added.

According to Schiffman, elephants have long been considered a walking problem. Because they have 100 times as many cells as people, they should be 100 times more likely to have a cell slip into a cancerous state and cause the disease over their long life span of 50 to 70 years. And yet analysis of a large database of elephant deaths estimates a cancer death rate of less than 5 percent compared to 11 to 25 percent in people.

【1】Why are elephants less likely to get cancer than humans?

A.Elephants are bigger than humans.

B.Elephants have more p53 genes and mechanism killing damaged cells.

C.Elephants are not as clever as humans in walking.

D.Elephants eat more than humans.

【2】Which of the following can be the equivalent of the underlined word “suppressor”?

A.multiplierB.complexC.restrainerD.coordinator

【3】What’s Prof Mel Greaves’ attitude towards the discovery?

A.Doubtful.B.Neutral.C.Critical.D.Favorable.

【4】What can we infer from the last paragraph?

A.Elephants have longer life than people.

B.There is no chance that elephants die from cancer.

C.The rate of elephants dying from cancer is increasing.

D.It was thought theoretically that elephants could get cancer more easily.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】 In 2012, Mary Davis, who works at an enrichment center .for young children, and her husband, Ari Kadin, who is in property management, were expecting their first child when Davis miscarried （流產(chǎn)）. They were desperately heartbroken. But the couple, who were volunteering with adults in a Skid Row homeless shelter, refused to let their heartbreak break them.

"In 2013, our child would have been one year old,” says Davis, 38, "and we kept seeing these kids at the shelter, and I said to my husband, 'We couldn't throw a birthday party for our child, so let's do it for these kids. '"

They took over a room in the Union Rescue Mission and filled it with streamers （飄帶）， gifts, a cake — all the makings of a great party. Since then, the couple has thrown a party every month. They routinely attract 250 kids and their parents. An hour before each party, volunteers arrive to set up the decorations and activities: face painting, balloon artists, a DJ, cake, and pizza. There are small presents for the kids celebrating their birthdays that month, but Davis makes sure there are more than enough to go around.

"I remember a mom came with her two kids," Davis says, “and her child had a birthday. We had an extra gift for her—pink headphones. The little girl was so excited that she was jumping up and down. And her mom …she's crying, 'Yesterday was her birthday. I had nothing to give her. I really didn't expect a birthday party for my child.'"

Doing her best to normalize（使正�；�these kids' lives is both heartwarming and bittersweet. Davis says, "If you look down, you see so many homeless people on the street, which reminds you that these kids don't get to leave this area after the party. "It may be why, after throwing 88 parties, she still cries after each one.

【1】Why did the couple volunteer in a Skid Row homeless shelter in 2013?

A.Because they love children.

B.Because they are warm-hearted.

C.Because they enjoy the procedure of helping others.

D.Because they didn't want to be stuck in the pain of loss.

【2】What do we learn from the passage?

A.Davis' child is 8 years old now.

B.The kids' parents are volunteers in the shelter.

C.Davis always prepares to get more presents for the kids.

D.The mother was very grateful to the couple for what they did for her kid.

【3】How long have the couple volunteered to hold parties for the kids according to the passage?

A.Less than 6 years.

B.Less than 7 years.

C.Nearly 7 and a half years.

D.Nearly 8 years.

【4】What can we infer from the last paragraph?

A.The kids won't leave the shelter after the party.

B.Davis doesn't want the kids to be homeless again.

C.Davis always sees many homeless people on the street.

D.Davis cries after each party because she suffers a lot in the volunteer activities.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】 A decade ago, colored lights danced around the living room on New Year's Eve and happy music was played. Upstairs, the children were asleep. But I wasn't feeling happy. In mid-December, my husband and I had been informed that he had cancer and that he was going to die. He had less than a year left, the doctors said.

In the years since that painful season, I have come to look back upon New Year's Eve as an ending and a beginning. New Year's Eve brings a halt to the endless commitments that fill our daily lives and a chance to reflect.

New Year's Eve is full of possibility and anticipation. What will be the surprising experiences and delightful successes in the coming year? But also, what disappointments are waiting for us in the next twelve months?

In many ways, New Year's Eve and the days that surround it are a line between past and future. That line is made up of a series of moments of transition that take us out of the old and into the new. Transition can be challenging for many of us. It's about letting go of the familiar and diving headlong （迅猛地） into the unfamiliar.

Just as, back then, I had to face letting go of the life I had led with my beloved husband and stepping into a new world as a widowed （喪偶的） mom. I find that each year I have to step out of the version of me that suited the year that is ending and ease into the version of me who will rise to the goals I am holding for myself for the year ahead.

Last year at this time, I sat in a chair in southern France and drank in the stillness and beauty of the countryside around me. The three children and I had brought into this world talked and laughed around the table beside me as we enjoyed a lunch of bread and cheese.

I was filled with a sense of joy and I had a glowing heart that was full of hope. It was another ending and another beginning. May we all transition into the best of what lies ahead. May we all find happiness this holiday season.

【1】What does the underlined word “halt” in Paragraph 2 mean?

A.Stop.B.Beginning.

C.Meaning.D.Tradition.

【2】What does the author think people should do at new year?

A.Set challenging goals for the next year.

B.Break with daily routines and form a new habit.

C.Spend more time with family members.

D.Think about the past and get ready for the future.

【3】What is the author's attitude toward the future?

A.Calm.B.Indifferent.

C.Doubtful.D.Expectant.

【4】What is the main purpose of the article?

A.To memorialize her husband.

B.To show how she got through a hard time.

C.To share her view of New Year's Eve.

D.To remind us that uncertainty is part of life.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】

In the last seven days I have seen the pressure that the NHS is under. I have seen the personal courage not just of the doctors and nurses but of everyone, the cleaners, the 【1】(cook), the health care workers of every description-physios, radiographers 【2】have kept coming to work, kept putting themselves in harm's way, kept 【3】(risk) this deadly virus. It is thanks to that courage, that devotion, that duty and that love that our NHS has been unbeatable.

The Arctic Ocean in summer will very likely be ice free before 2050, at least temporally. The research team 【4】 (analyze) recent results from 40 different climate models. Using these models, the researchers considered the future evolution of Arctic sea ice cover in a scenario with high future CO2 emissions and little climate protection. As 【5】(expect), Arctic sea ice disappeared quickly in summer in these simulations.

However, the new study finds that Arctic summer sea ice also disappears occasionally if CO2 emissions are 【6】(rapid) reduced.

In order to understand【7】 bird brains changed, a team of 37 scientists used CT scan data to create endocasts(內(nèi)腔)of hundreds of birds and dinosaurs, which the【8】(combine)with a large existing database of brain measurements from modern birds.

They then analyzed brain-body allometry (體形變). “There is no clear line 【9】the brains of advanced dinosaurs and primitive birds,”【10】(note) co-author Dr. Amy Balanoff of Johns Hopkins University." Birds like pigeons have the same brains sizes you would expect for a dinosaur of the same body size, and in fact some species like moa(恐鳥) have smaller-than-expected brains.”

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】Directions: Write an English composition in 120-150 words according to the instructions given below in Chinese.

假設你是明啟中學的學生張華，你們學校暑假里將有英國姐妹學校的交流生來訪，你主動申請接待其中一位。學校目前推薦了四項活動：看電影、吃中餐、參加一項學生校外社團活動（自定）、參觀一個上海的景點（自定）。請向負責老師寫一份申請信。

內(nèi)容包括：

1. 你的“活動計劃”（從上述四個選項中任選兩樣）；

2. 你的理由。

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】 If you’re looking forward to visiting a national park in the United States, here are some good options for you to choose from.

Acadia National Park—Maine

Lying on Mount Desert Island, a postcard-perfect island where Rockefellers and Astors summered, Acadia National Park is rich with rocky shorelines and has one of Maine’s most historic lighthouses. Hike to the top of 1,530-foot Cadillac Mountain to catch the sunrise, then go back to Bar Harbor, and treat yourself to a lobster roll at Stewman’s.

Where to Stay: Atlantic Oceanside Hotel, Bar Harbor Inn

Arches National Park—Utah

The red sandstone monoliths of Arches National Park in southeast Utah make for a giant playground for hikers, bikers, climbers, off-roaders, and other thrill seekers. However, climbing any named or unnamed arch in the park is banned by regulations. Throughout the park, there are 2,000 natural arches, including the famous Delicate Arch, which you might recognize from Utah’s license plate.

Where to Stay: Holiday Inn Express Hotel & Suites Moab, Fairfield Inn& Suites Moab

Yellowstone National Park—Wyoming

When you think of Yellowstone National Park, geysers will come to mind first and more specifically, Old Faithful, which does indeed live up to its name by erupting every 90 minutes or so. Another superstar of America’s oldest national park is the Grand Prismatic Spring, the park’s largest single hot spring, which also gains a reputation due to its striking coloration.

Where to Stay: Yellowstone Park Hotel, Explorer Cabins at Yellowstone

Shenandoah National Park —Virginia

Shenandoah’s famous 105-mile Skyline Drive is one of the prettiest drives in the Northeast.

This National Scenic Byway runs along the top of the Blue Ridge Mountains.

Where to Stay: Skyland, Hotel Laurance

【1】Who would most probably be drawn to Acadia National Park?

A.People interested in modern buildings.

B.People interested in camping in the desert.

C.People wanting to enjoy a good view of the seashore.

D.People wanting to climb a mountain of over 2,000 feet.

【2】What is Arches National Park suitable for?

A.Watching an east coast sunrise.B.Looking at beautifully man-made arches.

C.Climbing the well-known Delicate Arch.D.Having various outdoor thrilling activities.

【3】What do we know about the Grand Prismatic Spring?

A.It is famous for its eye-catching colors.

B.It can erupt for about 90 minutes each time.

C.It is the largest single hot spring in the world.

D.It is the most distinguished tourist spot in Wyoming.

【4】Where can someone enjoy beautiful sights along the drive?

A.In Utah.B.In Virginia.

C.In Maine.D.In Wyoming.

【5】What is the text meant to?

A.Encourage us to visit the United States.

B.Recommend some national parks in the US.

C.Introduce several hotels nearby national parks.

D.Make a comparison between some national parks.

查看答案和解析>>

同步練習冊答案