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The MississippiThe Mississippi is a great river whose relationship with man goes way back beyond its discovery in the 16th century．The River Indians used it as a highway and as a source of food, and it was they who gave it its name－“misi”meaning“great”and“sipi”meaning“water”．When the length of its branch, the Missouri, is added to it, the Mississippi becomes greater． 1 ．From the source of the Missouri to the tip of the delta(三角洲), it is 2, 480 miles long．
Great rivers are likely to suffer floods．In 1927 the Mississippi flooded 26 thousand acres, sweeping away farms, towns, everything in its path．In 1938 its floods drowned or killed 200 people and made millions homeless．Today the river has largely been controlled． 2 ．
Industries have spread down some of the waterways of the delta, but otherwise the delta is a remote place, the homeland of a little colony of French Canadians that the British drove out of Nova Scotia in the 18th century．They still speak French, mixed with English, Indian, Spanish and Negro idioms．They keep to themselves, farming the rich soil of the delta． 3 ．
4 ．Pioneers who first reached its banks wondered not only where it went, but what lay beyond．In 1764 the French founded a city on the right bank of the river, and named it after their king, Louis XV．This city, named St．Louis, became the jumping-off(起点)place for the adventurous men and women who opened up the Great Plains, and the way to the Far West．
Some 40 years earlier, at the beginning of the 18th century, the French had founded another city just above the Mississippi delta, New Orleans． 5 ．New Orleans is one of the great ports of the world, and one of the greatest terminals for both sea and river traffic．
A．It was the Mississippi that made the city what it is
B．Levees, high banks built of earth, hold back the flood waters
C．Therefore, as we know, it's the third longest river in the world
D．It is known that the“Great Water”has also been a frontier river
E．However, they paddled up and down the Mississippi in their boats to seek their fortune
F．The“Great Water”always remains a threat, for the streets of the city are below the level of the river
G．They call themselves Cajuns, who have actually been leading fairly primitive lives and preserving their own traditions
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31. New Zealand _________________________ (由… 组成) two large islands: North Island and South Island.(make)
32. The story of how I got my new job, and came to be _________________________ (和…关系好) my boss is a funny one. ( terms)
33. _________________________ (是在这片地上) the farmers produce food for the whole population of China. (it)
34. They _______________________ (冒着失去…的危险) everything to save the girl. (risk)
35. You won’t have a good harvest if you _________________________ (违背自然) and do things at the wrong time of the year. (go)
36. The students were late for class yesterday for _________________________ (各种各样的原因) . (variety)
37. _________________________ (追溯到) the Qin Dynasty, the traditional Xiangsheng Show is still one of the main Chinese art forms to entertain people. (date)
38. Chinese MaoTai ____________________ (质量上乘) and is sold all over the country. (of)
39. _________________________ (他们的共同点) is that they combine fun with the opportunity to learn something. (what)
40. New Zealand has a population of about 3.8 million people, _______________________(其
中14%) Maori. (which)
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一、填空（每小题1.5分，共30分）
（根据汉语提示填空并完成句子或短语。每空一词，请将答案做在答题卡上）
1．This was the moment when Spielberg’s career really _______off. （成功，腾飞）
2．Books are made _______ paper and paper is made _______ wood. （由……制成的）
3．The house where he once lived has been turned ______a museum and is visited by thousands of people every year. （变成）
4．If we reuse something, it will not end up ______waste. （以……告终）
5．Keep in ______ （保持联系）
6．the other way _______ （相反）
7．They will ______ down the old building . （拆毁）
8．a _______graduate student （一个有前途的研究生）
9．What does the UK______ ______ ? （代表 ）
10．A storm is just ______ the corner . （就在附近,即将来临）
11． keep up with the high ______of modern life （跟上现代生活的快节奏 ）
12．The twins have a lot in ________ with each other. （与……有相同之处）
13．come to _______ with （甘心忍受）
14．________ one’s goals. （达到自己目标）
15． He ______ about to lock the door when the telephone rang . （正要）
16．We tie the boat _____a tree. （把……拴在……）
17．Share happiness and _______ （同甘共苦）
18．____ number of the sdudents in our class is 56. （……的数量）
19．learn from the best _______ in the world （向世界顶尖人物学习）
20．The weather turned _____to be fine. （结果是……）
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A chemical important of brain development may play a role in explaining why some people are genetically (由基因决定地) likely to suffer from anxiety and could lead to new treatments, U．S. researchers said.
They said highly anxious rats which were kept had very low levels of a brain chemical called fibroblast growth factor 2 or FGF2, compared with rats that were more relaxed. But when they improved the anxious rats' living conditions—giving them new toys to explore and a bigger cage to live in—levels of this brain chemical increased and they became less anxious.
“The levels of this brain chemical increased in response to the experiences that the rats were exposed to. It also decreased their anxiety.”Javier Perez of the University o f Michigan said in a telephone interview. “It made them behave the same way as the rats that were relaxed，”he said.
In a former study of people who were severely depressed before they died, the team found the gene that makes FGF2 was producing very low levels of the growth factor, which is known primarily for organizing the brain during development and repairing it after injury.
Perez thinks the brain chemical may be a marker for genetic vulnerability (脆弱性) to anxiety and depression. But it can also respond to changes in the environment in a positive way, possibly by preserving new brain cells.
While both the calm and anxious rats produced the same number of new brain cells, these cells were less likely to survive in the high－anxiety rats, the team found. Giving the rats better living conditions or injecting them with FGF2 helped improve cell survival.
“This discovery may pave the way for new, more specific treatments for anxiety that will not be based on sedation(药物镇静), but will instead fight the real cause of the disease，” Dr. Pier Vincenzo Piazza from France said in a statement.
6. We know from the passage that with the levels of FGF2 decreasing, the rats will ________.
A. die of anxiety soon B. suffer from a headache
C. become more relaxed D. become more anxious
7. What's the better way to increase the levels of FGF2?
A. Introducing more companions to the anxious rats.
B. Improving the living conditions of the anxious rats.
C. Injecting the anxious rats with some special medicine.
D. Giving the anxious rats more time to relax.
8. The underlined word “it” in Paragraph 4 refers to ________.
A. the team B. the gene
C. the growth factor D. the brain
9. What's the main influence of the new discovery?
A. Doctors won't use any medicine to cure anxiety.
B. Doctors may treat anxiety more efficiently.
C. Doctors will find the real cause of anxiety.
D. Doctors may find new medicine for anxiety.
10. Which of the following would be the most suitable title for the passage?
A. Anxious rats and relaxed rats
B. Anxiety—a serious mental disease
C. Scientific research into the brain is important
D. Brain chemical may play key role in anxiety
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[1]Global difference in intelligence is a sensitive topic, long filled with a large number of different opinions. But recent data has indeed shown cognitive (认知的) ability to be higher in some countries than in others. What's more, IQ scores have risen as nations develop—a phenomenon known as the "Flynn effect". Many causes have been put forward for both the intelligence difference and the Flynn effect, including education, income, and even non-agricultural labor. Now, a new study from researchers at the University of New Mexico offers another interesting theory: intelligence may be linked to infectious-disease rates.
[2]The brain, say author Christopher Eppig and his colleagues, is the "most costly organ in the human body". Brainpower consumes almost up to 90 percent of a newborn's energy. It's clear that if something affects energy intake while the brain is growing, the impact could be long and serious. And for vast parts of the globe, the biggest threat to a child's body—and therefore brain—is parasitic (由寄生虫引起的) infection. These illnesses threaten brain development________________. They can directly attack live tissue, which the body must then try every means to replace. They can invade the digestive pipe and block nutritional intake. They can rob the body's cells for their own reproduction. And then there's the energy channeled (输送) to the immune system to fight the infection.
[3]Using data on national "disease burdens" (life years lost due to infectious diseases) and average intelligence scores, the authors found they are closely associated. The countries with the lowest average IQ scores have the highest disease burdens without exception. On the contrary, nations with low disease burdens top the IQ list.
[4]If the study holds water, it could be revolutionary for our understanding of the still-confusing variation in national intelligence scores.
【小题1】What is the main idea of the text？(no more than 10 words)
________________________________________________________________________
【小题2】Complete the following statement with proper words.(no more than 4 words)
Those countries that have the ________________ are always at the bottom of the IQ list.
【小题3】Fill in the blank in Paragraph 2 with proper words.(no more than 5 words)
___________
【小题4】What can cause intelligence difference？(no more than 8 words)
______________________________________________________________________
【小题5】What does the word “they” (Line2, paragraph3)probably refer to? (no more than 8 words)
______________________________________________________________________