題目列表(包括答案和解析)
Name: Off the Beaten Path
Cover price:$30.00
Our price:19.80
The best-selling Reader's Digest travel book has 40% new content including over 200 new sites, over 200 new full-color photographs, and all-new, up-to-date maps. It focuses on more than 1, 000 of the United States’ most overlooked must-see destinations.
Name: Container Gardens by Number
Cover price:$15.95
Our price:$9.49
A unique book contains 50 easy-to-follow container designs. Each design provides a simple numbered planting plan that shows exactly how to create each display, with an instruction of the finished planter and in-depth plant information. The plans are easy to follow and for any type of living space or garden.
Name: Best Weekend Projects
Cover price:$17.95
Our price:$13.96
Choose from 80 unique ideas to create an extraordinary living space. The projects are practical, as well as attractive, and will improve your home and yard and can be made in a weekend. These 80 well-designed projects are presented in a clear, easy-to-follow style that addresses readers in an accessible, user-friendly tone.
Name:l80l Home Remedies(治療方案）
Cover price:$40.00
Our price:$29.96
Plenty of health complaints can be handled at home. Each and every remedy will be tested by a doctor to make sure it is safe and sound. Dozens of conditions are covered, from headaches, sunburn, bad breath, and blisters (起泡；起瘡) to allergies, and hiccups (打嗝)
Can people change their skin colour without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin colour.
The gene comes in two versions, one of which is found in 99 per cent of Europeans. The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.
Scientists have changed the colour of a dark-striped zebrafish to uniform gold by inserting a version of the pigment(色素) gene into a young fish. As with humans, zebrafish skin colour is determined by pigment cells, which contain melanosomes(黑色素). The number, size and darkness of melanosomes per pigment cell determines skin colour.
It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation(變異) in the gene for melanosome production. This results in less pigmented skin.
However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes.
Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun(太陽光紫外線), which can cause skin cancer.
But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng.
Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin colour, said Cheng.
The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson.
51. The passage mainly tells us that ________.
A. people can not change their skin colour without any pain
B. the new discovery could lead to search into ways to change skin colour safely
C. pop king Michael Jackson often changed his skin colour as he liked
D. scientists have found out that people’s skin colour is determined by the gene
52. It can be inferred from the passage that ________.
A. nowadays people who want to change their skin colour have to suffer a lot from the damage caused by the chemical treatment
B. Europeans and Africans have the same gene
C. the new discovery could help to find medical treatments for skin cancer
D. there are two kinds of genes
53. Scientists have done an experiment on a dark-striped zebra fish in order to ________.
A. find the different genes of humans’
B. prove the humans’ skin colour is determined by the pigment gene
C. find out the reason why the Africans’ skin colour is dark
D. find out the ways of changing peopl’s skin colour
54. The reason why Europeans are light-skinned is probably that ________.
A. they are born light-skinned people
B. light-skinned Europeans have mutation in the gen for melanosome production
C. they have fewer activities outside
D. they pay much attention to protecting their skin
55. The writer’s attitude towards the discovery is ________.
A. neutral B. negative C. positive D. indifferent
Can people change their skin colour without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin colour.
The gene comes in two versions, one of which is found in 99 per cent of Europeans. The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.
Scientists have changed the colour of a dark-striped zebrafish to uniform gold by inserting a version of the pigment(色素) gene into a young fish. As with humans, zebrafish skin colour is determined by pigment cells, which contain melanosomes(黑色素). The number, size and darkness of melanosomes per pigment cell determines skin colour.
It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation(變異) in the gene for melanosome production. This results in less pigmented skin.
However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes.
Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun(太陽光紫外線), which can cause skin cancer.But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng.Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin colour, said Cheng.
The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson.
The passage mainly tells us that ________.
A. people can not change their skin colour without any pain
B. the new discovery could lead to search into ways to change skin colour safely
C. pop king Michael Jackson often changed his skin colour as he liked
D. scientists have found out that people’s skin colour is determined by the gene
It can be inferred from the passage that ________.
A. nowadays people who want to change their skin colour have to suffer a lot from the damage caused by the chemical treatment B. Europeans and Africans have the same gene
C. the new discovery could help to find medical treatments for skin cancer D. there are two kinds of genes
Scientists have done an experiment on a dark-striped zebra fish in order to ________.
A. find the different genes of humans’
B. prove the humans’ skin colour is determined by the pigment gene
C. find out the reason why the Africans’ skin colour is dark D. find out the ways of changing peopl’s skin colour
The reason why Europeans are light-skinned is probably that ________.
A. they are born light-skinned people
B. light-skinned Europeans have mutation in the gen for melanosome production
C. they have fewer activities outside D. they pay much attention to protecting their skin
The writer’s attitude towards the discovery is ________.
A. neutral B. negative C. positive D. indifferent
B
LOS ANGELES-British singing sensation Susan Boyle’s first album quickly climbed to No. 1 on U.S. album charts on Wednesday with sales of 701,000 copies, beating new releases by Adam Lambert and Rihanna and becoming the best-selling debut(首次演出) of 2009. Boyle, 48, a frumpy Scottish singer, who became an international YouTube phenomenon after appearing on TV show “Britain’s Got Talent”, also topped the British album charts earlier this week.
Her “I Dreamed a Dream” release through Sony Music Entertainment, marked the best U.S. opening of a female artist's debut album since Nielsen SoundScan began tracking sales in 1991, Billboard.com said. It was also the fastest selling album in Britain this year and has topped the charts in Australia and Ireland.
Billboard said only one album in SoundScan’s tracking history had seen a bigger opening week than Boyle. U.S. rapper Snoop Dogg’s album “Doggystyle” sold 803,000 copies in its first week in 1993—before traditional album sales began tumbling(falling rapidly) in the face of piracy(盜版) and a shift to digital sales.
Although Boyle finally failed to win “Britain’s Got Talent”, her April trial hearing for the show has been viewed more than 300 million times on the Internet.
In a good week for stars of TV talent shows, “American Idol” runner-up Adam Lambert’s debut album “For Your Entertainment”, also released through Sony, debuted at No.3 on the Billboard 200 with 198,000 copies sold. Lambert’s strong showing followed headline news coverage of his bad televised live performance at the American Music Awards 10 days ago in which he aroused oral sex with a dancer and kissed a male keyboard player.
R&B singer Rihanna’s “Rated R”, her first studio album since being attacked by her then-boyfriend Chris Brown in February, bowed in at No.4 with 181,000 copies—the best sales week in the 21-year-old singer’s career.
Italian singer Andrea Bocelli held onto the No.2 spot for a third week with his “My Christmas” album with 218,000 new copies sold during the week, SoundScan said.
60. According to the passage, what albums were released through Sony Music Entertainment?
A. Doggystyle and I Dreamed a Dream.
B. For Your Entertainment and I Dreamed a Dream.
C. Rated R and Doggystyle.
D. My Christmas and For Your Entertainment.
61. What do you learn from the passage?
A. Doggystyle marked the biggest opening week in SoundScan’s tracking history.
B. I Dreamed a Dream was the fastest selling album in English-speaking countries.
C. Upon its release, Boyle’s first album ranked first on album charts on Wednesday.
D. Boyle became world-famous after she won Britain’s Got Talent.
62. Who may perform crazily and leave audience a bad impression?
A. Susan Boyle. B. Andrea Bocelli. C. Rihanna. D. Adam Lambert.
63. From the passage we can conclude _______.
A. The albums could have sold better if it had not been for piracy and a shift to digital sales
B. Boyle became world-famous because she was a female artist.
C. Being attacked by her then-boyfriend might decrease the sales of Rihanna’s Rated R.
D. Andrea Bocelli’s album My Christmas only kept the No. 2 spot for two weeks.
Can people change their skin colour without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin colour.
The gene comes in two versions, one of which is found in 99 per cent of Europeans. The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.
Scientists have changed the colour of a dark-striped zebrafish to uniform gold by inserting a version of the pigment(色素) gene into a young fish. As with humans, zebrafish skin colour is determined by pigment cells, which contain melanosomes(黑色素). The number, size and darkness of melanosomes per pigment cell determines skin colour.
It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation(變異) in the gene for melanosome production. This results in less pigmented skin.
However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes.
Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun(太陽光紫外線), which can cause skin cancer.
But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng.
Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin colour, said Cheng.
The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson.
The passage mainly tells us that ________.
A. people can not change their skin colour without any pain
B. the new discovery could lead to search into ways to change skin colour safely
C. pop king Michael Jackson often changed his skin colour as he liked
D. scientists have found out that people’s skin colour is determined by the gene
It can be inferred from the passage that ________.
A. nowadays people who want to change their skin colour have to suffer a lot from the damage caused by the chemical treatment
B. Europeans and Africans have the same gene
C. the new discovery could help to find medical treatments for skin cancer
D. there are two kinds of genes
Scientists have done an experiment on a dark-striped zebra fish in order to ________.
A. find the different genes of humans’
B. prove the humans’ skin colour is determined by the pigment gene
C. find out the reason why the Africans’ skin colour is dark
D. find out the ways of changing peopl’s skin colour
The writer’s attitude towards the discovery is ________.
A. neutral B. negative C. positive D. indifferent
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