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:

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.”

 0  251333  251341  251347  251351  251357  251359  251363  251369  251371  251377  251383  251387  251389  251393  251399  251401  251407  251411  251413  251417  251419  251423  251425  251427  251428  251429  251431  251432  251433  251435  251437  251441  251443  251447  251449  251453  251459  251461  251467  251471  251473  251477  251483  251489  251491  251497  251501  251503  251509  251513  251519  251527  447348 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网