【題目】【原創(chuàng)】My dictionary__________. I have looked for it everywhere but still

A. has lost; do not find B. is missing; do not find

C. has lost; have not found D. is missing; have not found

【答案】D

【解析】

試題分析：考查完成時。句意：我的詞典丟了，我已經(jīng)到處找過了還是沒有找到。lose是個及物動詞，如果要表示某物丟失了，只能用被動語態(tài)。A項與C項 使用的都是其主動形式。missing是形容詞，其詞義是：lost；not to be found（丟失了）， 據(jù)此，第一空缺處應(yīng)填人is missing。根據(jù)語境，第二個空缺處應(yīng)填使用現(xiàn)在完成時的否定形式，因為它可以表示目前還未發(fā)生的動作。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：

【題目】Scientists are fond of running the evolutionary clock backward, using DNA analysis and the fossil record to figure out when our ancestors stood straight and split off from the rest of the primate evolutionary tree. But the clock is running forward as well. So where are humans headed? Here's a thoughtless assessment of possible paths, ranging from similar humans to alien-looking hybrids bred for interstellar (星際的) travel.

Different populations of a species have to be separated from each other in order for those populations to diverge into separate species. Populations are increasingly in contact with each other， leading to greater gene-mixing. It's believable that separate species would appear. Evolution is still at work and the trend may well be accelerating. Cultural diversity is fading as human society becomes more interconnected globally.

The radical king of evolution moves much more quickly than biological evolution. High-tech improvements are ranging from Supermen, to camera-equipped flying drones（遙控飛機）, to pills that keep soldiers going without sleep or food for days. To date, genetic medicine has focused on therapies that work on only one person at a time. The effects of those therapies aren't carried on to future generations. Tinkering with the germline could conceivably produce a superhuman species in a single generation-but could also conceivably create a race of monsters.

Today the rapid pace of cybernetic(計算機控制論的) change has led to worry that artificial intelligence may outpace human’s natural smarts. In some fields, artificial intelligence has already bested human. We're already making machines that can be assimilated (同化) including artificial limbs, mechanical hearts, and artificial retinas (視網(wǎng)膜).

If humans survive long enough, there's one sure way to grow new branches on our evolutionary family tree by spreading out to other planets. If humans established a permanent settlement on other planets, the radically different living conditions would change the evolutionary equation (方程式) What will be inconceivable millions of years from now? Two intelligent species, human and machine, definitely work together to spread life through the universe.

【1】Scientists study the evolution according to .

A. different populations of a species

B. DNA analysis and the fossil record

C. cultural diversity and greater gene-mixing

D. high-tech enhancements and biological evolution

【2】 Which is NOT true about human beings' evolution?

A. New species will appear.

B. Human's evolution is faster than biological evolution

C. Cultures will become more colorful.

D. The evolution might create a race of monsters.

【3】What might bring threat to human beings?

A. Supermen. B. Monsters.

C. Alien. D. Artificial intelligence.

【4】Which of the following must happen in the future?

A. Humans survive long enough.

B. Humans spread out to other planets.

C. Human and machine work together.

D. Living conditions change the evolutionary equation.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】閱讀下面材料，在空格處填入適當?shù)膬?nèi)容（1個單詞）或使用括號單詞的正確形式。

Tim Cook, the CEO of Apple , showed off their 【1】 （late）product, the Apple Watch. “It will change what people expect form 【2】 watch,” Cook said, “and the watch will be one of the best 【3】 （product）Apple has ever created.” The Apple watches. 【4】 （sell）at different prices, from $ 349 【5】 $15,000.

An Apple Watch will be able to do the same things 【6】 an iPhone. You can read email, texts, news, health data and other information on a small screen. Besides , you will be able to answer telephone calls on your wrist. By 【7】 （turn）the crown on an Apple Watch, you can zoom in and out, to look at a map. You can also capture and send your heartbeat to another person with an Apple Watch. 【8】 , its 24-hour battery is a big problem. You need to charge（充電）your watch every night, 【9】 will be very inconvenient.

Apple fans look forward to getting an Apple Watch, but it remains to be seen 【10】 other customers can accept it.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】In the world nothing is more important than health. If people took away our money, houses, cars, or even our clothes, we could still survive. 【1】 Then how can we keep healthy?First of all, we should eat healthily. I usually avoid eating food high in fat, like French fries or cookies, which are junk food. 【2】I only eat little meat. 【3】 It helps us build a strong body. Regular exercise is an important part of keeping me healthy. In addition, I think friends are an important part of one’s health. 【4】I always feel better when I am with friends than when I am alone. When I am with my friends, I always laugh. Laughing is also an important part of health. It is good to stay with my friends.By eating properly and exercising regularly, I can keep my body at a proper weight and keep healthy. By spending time with my friends, I can keep my mind as well as my body happy. These things sound easy to do, but not many people can manage them. 【5】

A. What’s more, taking exercise is very important.

B. Some people appear fat because they often eat too much.

C. I think a strong will is necessary if we want to keep fit.

D. I eat a lot of vegetables and fresh fruits which are full of vitamins.

E. There are some people who like staying alone, but they keep healthy.

F. But if our health were taken away, we could surely die.

G. Many studies show that people with few friends often get sick.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】【原創(chuàng)】____________professional violinist practices for several hours a day, but____________ violinist has his own way of playing the Beethoven concert.

A. Each, every B. Every, each

C. One, a D. All, each

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】【原創(chuàng)】—May I have another chocolate?

—Yes, of course.___________.

A. Take it yourself B. Eat it, please

C. Help yourself D. Have it yourself

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】 _ __ __, I have to put it away and focus my attention on study this week.

A. However the story is amusing

B. No matter amusing the story is

C. However amusing the story is

D. No matter how the story is amusing

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】The big fire ________ due to the burning of construction materials caused 58 deaths and destroyed all the belongings of the people there.

A. was believed to occur

B. was believed to have occurred

C. believed to have been occurred

D. believed to have occurred

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】A man punished his 3-year-old daughter for wasting a roll of gold wrapping paper. Money was tight 【1】 he became angry when the child tried to decorate a box 【2】 (put) under the Christmas tree. Nevertheless, the little girl 【3】 (bring) the gift to her father the next morning and said, “This is for you, Daddy.”

The man was embarrassed by his earlier overreaction, but his anger flared again when he found out 【4】 box was empty. He yelled at her, 【5】 (state) “Don’t you know, when you give someone a present, there is supposed to be __【6】_ inside?” The little girl looked up at him 【7】 tears in her eyes and cried, “Oh, Daddy, it’s not empty at all. I blew kisses into the box. They’re all for you, Daddy.”

The father was crushed. He put his arms around his little girl, and he begged for her

【8】 (forgive). Only a short time later, an accident took the life 【9】 the child. For many years, her father kept that gold box by his bed and 【10】 he was discouraged, he would take out an imaginary kiss and remember the love of the child who had put it there.

查看答案和解析>>

同步練習(xí)冊答案