3．带着忧虑的表情______________________________________________________________

1. 大规模地_________________________　 2. 等同于做某事___________________________

28. A. gracefully 　　　B. emotionally 　　C. academically 　D. financially 　29. A. free from　　 　B. isolated from 　　C. related to 　　　D. close to 　30. A. providing 　　　B. making 　　　　　C. taking 　　　　D. losing

语法填空(时间：10分钟)

Carrying Faggots to Put Out a Fire In the last years of the Warring States period, the State of Qin attacked the State of Wei ____31_____ a large scale repeatedly and occupied large areas of land. In 273 B.B., the Qin army launched another attack upon the State of Wei. The king of the State of Wei summoned ____32_____officials,and asked with a ____33_____ (worry) look if anyone could propose a way to defeat the Qin army. Most of the officials persuaded the king to sue for peace, at the cost of giving away to the State of Qin the large area of land. However, Su Dai, a counsellor, did not agree. "Once there was a man ____34_____ house was on fire. People told him to put out the fire with water, but he would not listen. ____35_____, he carried a faggot to put out the fire, only to make the fire ____36_____ (fierce). That was ____37_____ he didn't know that,instead of putting out the fire, faggots could only make it burning more vigorously. Isn't it equal to ____38_____ (carry) faggots to put out a fire if you agree to sue for peace at the cost of the land of the State of Wei?"Though Su Dai's argument was very convincing, the king accepted the ____39_____ (suggest) of those officials and gave away to the State of Qin a large area of the land of the State of Wei. ____40_____ might be expected, the Qin army attacked the State of Wei on a large scale in 225 B.C. The State of Wei was finally destroyed by the State of Qin.

积累短语：

55. The passage suggests that ________.

A. different kinds of birds have different ways to migrate

B. different kinds of birds migrate for various reasons

C. some birds can survive without migrating each season

D. birds’ food sources are becoming rare all over the world

54. Which of the following is true?

A. All birds fly to non-breeding areas each year. 　B. There are 379 species of birds migrating.

C. Two related species have the same behavior.　 D. Computers are used in the research work.

53. The researchers constructed a “supertree” mainly to ________.

A. compare the sizes of different birds

B. make out the relationships between different birds

C. find out what causes birds to leave each season

D. predict when the birds were migratory

52. The scientists used to believe that birds migrate because ________.

A. they want to search for the food they like　　　

B. they can find more food in a different place

C. they can breed their young in a different place

D. the weather turns too cold

51. The passage mainly tells us ________.

A. the real reason for birds’ migration　　 　　　 B. food scarcity that birds face today

C. how birds search for food　　　　　 　　　　　　 D. when birds migrate

50. We can infer from the passage that in the hotel ______.

A. you can read many newspapers from around the world

B. you can enjoy both the urban and rural exciting lives

C. there are many advanced computers for customers to use

D. there probably are some pictures of snow leopards

C

It’s food scarcity (短缺), not dietary preferences, that motivates birds to migrate thousands of miles back and forth between breeding and non-breeding areas each year, new research shows.

“It’s not whether you eat insects, fruit, nectar or candy bars or where you eat them - it matters how reliable that food source is,” said study leader W. Alice Boyle of the University of Arizona.

To figure out the pressures that drive some birds to leave home for the season, Boyle examined 379 related species of flycatchers and compared their sizes, food types, habitats, migratory behaviors and whether or not they fed in flocks.

To compare the birds, the researchers constructed a “supertree” showing the exact evolutionary (演化的) relationships among different species.

A computer analysis then determined whether a particular species was migratory because it ran in the “family” or whether something in the bird’s environment was forcing it to leave each season.

Boyle and her colleagues found that food scarcity was the number one issue that predicted a species’ migratory behavior.

An alternative strategy that birds use to deal with food scarcity is to forage (四处搜寻) in flocks, because a group is more likely to find a new source of food than a lone individual.

“If you are faced with food scarcity, you have two options,” Boyle said. “You can either forage with other birds, or you can migrate.”

49. You can do all the following in the hotel EXCEPT ______.

A. read free newspapers　　　　　 　　　　　　　 B. surf on the Internet

C. do exercise deep in the night　　 　　　　　　　 D. watch movies as you like