题目内容
（请给出正确答案）
CO2is the only greenhouse gas that will trap the Sun's radiation within the troposphere.
A．Y
B．N
C．NG
如果结果不匹配，请 联系老师 获取答案
更多“CO2is the only greenhouse gas …”相关的问题
A．acquainted
B．informed
C．accustomed
D．accepted
W: Let's see now. The red one is only $10.95, and the green one was $ 15.
Q: Approximately how much money does the clerk owe the mane
(18)
A．$ 39.
B．$ 35.
C．$ 4.
D．$ 5.
A．There is a sign of "green hand" inside the car.
B．There are two sets of brakes inside the car.
C．It is only big enough to hold 3 persons.
D．It can't run very fast no matter how you drive.
A．acquainted
B．informed
C．accustomed
D．accepted
M: I do it on purpose. I set this yellow clock ahead ten minutes, and this black one back ten minutes, but I always set that green one to the right time.
Q: What can we learn from the conversation？
(19)
A．The man has only two clocks in his bedroom.
B．The yellow clock keeps the right time.
C．The black clock is ten minutes slow.
D．The green clock is ten minutes ahead of time.
The Green Campus
If you attended this year's commencement (毕业典礼) at Williams College in western Massachusetts, you probably sampled the fresh food made from locally produced, hormone-free milk. You might have tried the organic greens with edible cabbage blossoms or sampled the fresh asparagus (芦笋) all from nearby farms. These dishes not only tasted better than standard ones but also saved fossil fuels normally used to ship food long distances. Disposable plates and cutlery were nowhere to be found, reducing trash by 80 percent. And the rare disposable items were eco-friendly. "We used compostable paper 'napkins and biodegradable straws," says Stephanie Boyd, who helped organize the "green commencement" as part of her job as chair of Williams's climate-action committee.
It was not only aimed to impress parents. More and more colleges are getting serious about going green. In June, 284 university presidents representing some of the nation's most influential schools announced an agreement pledging to make their campuses "carbon neutral". The message was clear. "We're saying that sustainability is no longer an elective," says Cornell president David Skorton. Their motivation wasn't merely to reduce energy consumption and waste. As a $ 315 billion sector of the economy--and one that will train future leaders--higher education has a special responsibility to encourage environmental stewardship. The university presidents hope that even students who don't pursue increasingly popular majors in environmental studies will learn simply from being on a green campus, living in green buildings, eating sustainable food and absorbing everyday messages of conservation. And who knows？ Far-reaching environmental programs may create an air of excitement that attracts applicants. "In the long run, students will say, why would I want to go to a school that doesn't care about this？" says Michael Crow, president of Arizona State University, which has. made a major commitment to sustainability.
At Harvard, going green starts before students even arrive on campus, when freshmen receive mailings urging them to buy only energy-efficient refrigerators for their dorm rooms and purchase compact fluorescent (发荧光的) bulbs, which use an average of 18 Watts apiece instead of 75. But some of the most effective lobbying comes from students themselves. Harvard pays 20 undergraduates to help get the green message out to fellow students in a fun way. That might mean whipping up a competition between residential houses to win the coveted Green Cup for the greatest energy reductions and biggest increases in recycling. Or it could be organizing trash-free dances or green movie nights ("Who Killed the Electric Car？") with free ice cream for anyone who brings a recyclable bowl. One day a year, students collect trash from Harvard Yard and pile it into a single heap, called "Mount Trashmore". The giant mound (垛) reminds students how much they are throwing away and how much waste they could avoid by recycling. Students even compete to come up with the best ecothemed cartoons. This year's second-place winner showed Marilyn Monroe with her iconic billowing skirt under the caption wind does great things. The fun adds up to serious savings. "Energy use in the dorms has decreased 15 percent over the past few years, and recycling has risen 40 percent," says Leith Sharp, head of the Harvard Green Campus Initiative.
At many schools, the construction of a new building is another chance to push green solutions. "What message does a conventional campus send？" asks David Orr, who teaches environmental studies at Oberlin. "It sends the message that energy is cheap and plentiful. "At Oberlin and other colleges, administrators are seeking to reverse that message with energy-efficient buildings. The Lewis Center at Oberlin, opened in 2000, was one of the firsts. It's powered entirely by solar arrays, which produce 30 percent mor
A．Y
B．N
C．NG
听力原文： A beetle invasion in the United States has killed at least twenty million ash trees. The invasion of the emerald ash borer was first discovered near Detroit, Michigan, in 2002. Experts believe the small green insects arrived in the 1990's in shipments of goods from China.
The emerald ash borer has destroyed trees in the Midwest and as Far East in the United States as Maryland. The insects have also spread as far north as Ontario, Canada.
Ash trees can resist many diseases. But they cannot resist the emerald ash borer. It lays eggs on the bark. The young larva drill into and feed on the inner bark. This harms the ability of the tree to transport water and nutrition.
In some places, farmers .are using "detection trees". They have an area where bark has been cut away. The area circles the tree. The process weakens the tree. It makes them easier targets for borers, and shows if the insects are nearby.
Efforts to stop the spread of the emerald ash borer include cutting down affected trees. There are worries that the ash tree might disappear unless the invasion is controlled. To prepare for such a possibility, a government laboratory is asking people to send in the seeds from ash trees. It examines and X-rays the seeds to make sure that there are no living borer fertilized eggs. Only the best seeds are remained and then sent for storage in a seed bank. There, they are dried and frozen. Should the seeds ever be needed, the hope is that scientists might someday develop an ash tree that could resist the little green attackers.
(30)
A．To Michigan.
B．To China.
C．To Maryland.
D．To Canada.
(1)Which statement is correct according to paragraph one？
A、Broccoli was first bred by Mendel
B、Broccoli wasn’t considered edible until 500 years ago
C、Mendel's work was considered most important in the history of genetics
D、Mendel’s study found its major application some 100 years ago
(2)What was cited as a result of the green revolution？
A、Sharp rise in worldwide wheat production
B、Extensive use of organic fertilizer
C、Large-scale adoption of genetic modification
D、Commercial success of genetically modified seeds.
(3)Which statement is true of GenBank according to the passage？
A、The number of gene sequences has doubled since its foundation
B、The commercial breeders are its main sponsors
C、It is a genetic sequence database
D、It was founded in 2004
(4)It can be learned from the passage that the significance of genetic modification is ______.
A、questioned by some critics
B、poorly conveyed to the public
C、appreciated by all breeders
D、fully understood only by scientists
(5)The word “novel” in paragraph three is closest in meaning to ______.
A、artificial
B、various
C、hybrid
D、new
W: Oh, Dr. Green, I'm really sorry about missing yesterday.
M: Actually, it's been several days. Counting today, we've only had 6 classes, yet you've already missed 4. You won't be able to pass if you're constantly absent.
W: I'm really sorry, but I've been extremely busy. I promise to attend the rest of the classes on time.
M: Well, I hope you're ready for today's exam.
W: Today？ I thought it was Monday!
M: Read the outline, Jane; this is precisely what I'm talking about. You should either make an effort to attend, or you should consider withdrawing while it's still possible.
W: What do you mean？
M: Today's the final day you can withdraw and get a full refund.
W: Maybe I really should; what do you suggest？
M: I wish you could attend classes regularly; however, if you don't believe you're capable of this, then don't waste your money.
W: Thanks, Dr. Green; I really appreciate your advice. If it's okay, I suppose I'll go ahead and drop the class.
M: It's entirely up to you, but that might be best if you don't think things are going to change. Excuse me, the students are coming, and I've got to get ready for class. I wish you the very best of luck, Jane.
W: Thank you, Dr. Green. Good bye.
(20)
A．She hasn't been getting adequate grades.
B．She has been overloading herself with homework.
C．She hasn't been attending class on time.
D．She has been coming to school much too early.
Plants have【C10】______ relations to get what they need to survive. Normal【C11】______ plants can make their own carbohydrates through photosynthesis, but they still need minerals. Most plants have【C12】______ a symbiotic relationship with a【C13】______ network of what are called mycorrhizal fungi, which lies beneath the forest【C14】______ . The fungi help green plants absorb minerals through their roots, and【C15】______ , the plants normally【C16】______ the fungi with sugars, or carbon. With a number of plants sharing the same fungal web, it was perhaps【C17】______ that a few cheaters —dubbed epiparasites-- would evolve to beat the system.【C18】______ , these plants reversed the flow of carbons【C19】______ it into their roots from the fungi【C20】______ releasing it as "payment".
【C1】
A．but
B．if
C．because
D．though
