题库

1.When the goats are full, they_____ in the sun to digest and dehydrate before continuing their work.

A.compress

B.congregate

C.confine

D.Compel

2.The program is helping build the students，self-worth by making them an____part of the local community.

A.impressive

B.inactive

C.impartial

D.Integral

1.When they deviated from the diet, even after years of compliance, the disease invariably got worse.

A.diverged

B.recovered

C.isolated

D.suffered

2.She emerged smiling to face reporters assembled in the lobby, but she did not say whether they talked about fabricated news.

A.terrified

B.serious

C.worried

D.fictitious

1.The office, laboratory, and museum are situated at the top of the hill in which they command a fine view.

A.where it commands

B.which it commands

C.where they command

D.which they command

2.Some studies suggest parents today do have more face time with their children than the parents decades ago as driven largely by increased time spent with fathers.

A.to be driven largely

B.largely driven

C.being driven largely

D.having been largely driven

1.For more than 50 years, microbiologists in the U.S. and Europe have warned against using antibiotics to fatten up farm animals. The practice, they argue, threatens human health by turning farms into breeding grounds of drug-resistant bacteria. Farmers responded that restricting antibiotics in livestock would devastate the industry and significantly raise costs to consumers. We have empirical data that should resolve this debate. Since 1995, Denmark has enforced progressively tighter rules on the use of antibiotics in raising pigs, poultry and other livestock. In the process, it has shown that it’s possible to protect human health without hurting farmers. Farmers in many countries use antibiotics in two key ways: (1) at full strength to treat sick animals and (2) in low doses to fatten meat-producing livestock or to prevent veterinary illnesses. Although even the proper use of antibiotics can inadvertently lead to the spread of drug-resistant bacteria, the habit of using a low or “sub-therapeutic” dose is a formula for disaster: the treatment provides just enough antibiotic to kill some but not all bacteria. The germs that survive are typically those that happen to bear genetic mutations for resisting the antibiotic. They then reproduce and exchange genes with other microbial resisters. Because bacteria are found literally everywhere, resistant strains produced in animals eventually find their way into people as well. You could hardly design a better system for guaranteeing the spread of antibiotic resistance. The data from multiple studies over the years support the conclusion that low doses of antibiotics in animals increase the number of drug-resistant microbes in both animals and people. As Joshua M. Scharfstein, a principal deputy commissioner at the Food and Drug Administration, put it, “You actually can trace the specific bacteria around and ... find that the resistant strains in humans match the resistant strains in the animals.”And this science is what led Denmark to stop sub-therapeutic dosing of chickens，pigs and other farm animals. Although the transition unfolded smoothly in the poultry industry, the average weight of pigs fell in the first year. But after Danish farmers started leaving piglets together with their mothers a few weeks longer to bolster their immune systems naturally, the animals’ weights jumped back up, and the number of pigs per litter increased as well. The lesson is that improving animal husbandry — making sure that stalls and cages are properly cleaned and giving animals more room or time to mature — offsets the initial negative impact of limiting antibiotic use. Today Danish industry reports that productivity is higher than before. Meanwhile, reports of antibiotic resistance in Danish people are mixed, which shows — as if we needed reminding — that there are no quick fixes. Of course, the way veterinary antibiotics are used is not the only cause of human drug- resistant infections. Careless use of the drugs in people also contributes to the problem. But agricultural use is still a major contributing factor. Every day brings new evidence that we are in danger of losing effective antibiotic protection against many of the most dangerous bacteria that cause human illness. The technical issues are solvable. Denmark’s example proves that it is possible to cut antibiotic use on farms without triggering financial disaster. In fact, it might provide a competitive advantage. Stronger measures to deprive drug-resistant bacteria of their agricultural breeding grounds simply make scientific，economic and common sense.

2.On the Internet，ads are a real problem. They’re a problem for us，the people，and not just because they clutter up our Web pages, they also cost us money (in mobile data charges), battery life and time. Surprisingly，they’re also a problem for advertisers and websites. Suddenly the popularity of ad-blocking software has reached a tipping point. According to a study by Adobe and PageFair (which offers anti-ad-blocking services), 41 percent of adults younger than 30 use these blockers. Overall, ad-blocker installations are up 48 percent in a year — and that was before Apple began approving ad-blocking apps for the iPhone and iPad last September, marking ad blocking has come to the mobile world for the first time in a huge way. The thing is, most of those free articles, videos and services you enjoy are brought to you by the advertising. If you’re not seeing the ads, then the central financial transaction of the online content economy collapses. What then? Some websites appeal to visitors directly, asking you to view the ads. Last summer Wired.com’s home page said，“Please do us a favor and disable your ad blocker.” Other sites simply turn you away if you have an ad blocker installed. The sites for leading UK broadcasters Channel 4 and ITV present a dark screen. Enter ad-blocker-blocking technology----Web software that tries to fool the ad blockers so that the ads appear despite your blocker. Some companies that operate ad blockers even accept money from large advertisers, although they deny giving ads from those companies, special treatment. But these tactics treat the public as the enemy. They create a technology arms race. “You will see our ads, like it or not!” Advertising executives may tell you that one solution may be native advertising: ads dressed up as articles. They're displayed as actual stories or videos rather than splashy ads, so they pass through ad blockers. These can lead to some murky territory, however, blurring the line between traditional content and content aiming to sell you something. So tech Utopians like me wonder why the answer isn’t micropayments. You know, instead of looking at ads, you're automatically billed a few cents for each article you read or video you watch. Unfortunately, in the late 1990s and early 2000s a bunch of companies tried to invent micropayment systems; all of them failed. To find out why, I tracked down the CEOs of some of the startups who have all moved on to other endeavors. “Micropayments sound great on paper,” former BitPass CEO Douglas Knopper told me. “But in practice, they require four things for the consumer that are hard to pull off: simplicity, ubiquity, security — and it has to be free. The economics to the retailer don’t work，because there are too many middlemen — credit card processors, etc. So until someone figures out how to crack the code ... micropayments aren’t going to get any traction.” The timing was wrong，too. Charles Cohen，founder of failed micropayment company Beenz, told me that these efforts mostly died “because the dot-com bubble burst, and most of the companies who were accepting and issuing our microcurrency went up in a puff of smoke.” So micropayments may face an uphill battle, but there asn’t any screamingly obvious reasons why they couldn’t work now. It seems Web companies would be happy to get out of the ad-blocking arms race, while Web users, well, we wouldn't mind paying a few cents here and there to never encounter another intrusive banner ad or slow-to-load video ad.

1. China is the top source country of international students in the world. Recent statistics have shown a_____(91) trend for Chinese students to study abroad at a younger age.The___(92) of Chinese students studying abroad has rapidly increased in recent years.According to statistics___(93) by the Ministry of Education in the academic year of 2010, about 285,000 people were educated abroad, up 24 percent from the previous year.The majority of overseas students were undergraduates and postgraduates, but the number of_____(94) students has been growing dramatically. Among the total number of students who went abroad last year, more than 20 percent were under 18 years old. Zhang Chao, general manager of EIC Group, an international education service company，explains,“Among our____(95) in the past two or three years, the____(96) rate of students going abroad was about 20 percent，while the rate of those under 18 was about 20 to 25 percent, which is higher than the average growth. Most of them go to study in high schools，and there are a few primary school students as well.” A recent survey____ (97) by MyCOS, HR Digital Information Corporation and Chinese Service Center for Scholarly Exchange, _____(98) a large number of high school students are planning to study abroad. Zhang Jingxiu, Vice President of MyCOS Corporation, elaborates: “From last September to this March，we have received more than 2,900 online___(99) to questionnaires. The target interviewees were high school students. We found that 70 percent of the students plan to study abroad after graduating from high school. Twenty-four percent plan to study in_____(100) high schools. Only 6 percent plan to study in domestic universities and then______(101) postgraduate studies overseas.” In the survey, more than 60 percent of students say they want to receive a better education, while 19 percent go abroad to______(102) the stress of taking China"s university entrance examinations. Due to high living___(103) and tuition fees, most young overseas students come from well-off families. Brought up in fairly good conditions, many of them face various______(104) living on their own in a strange country. Due to Language _____(105) they also face difficulties communicating with others. Shi Yiru, consultant from Shanghai Huashen International Education Corporation, raises some suggestions. “Young overseas students should be more _____(106) about making new friends. Although schools help_____(107) their study habits, they should be more independent. Students with strong communication skills are easier at_____(108) to new circumstances.” For children studying abroad, parents make the_____(109) decision. But experts suggest parents communicate with their children and_____(110) their willingness when it comes to making the choice between staying at home and studying abroad on their own at a tender age.