假设美元的利率为6%，人民币的利率为2%，则3个月的远期美元对人民币( )。 A．

植物根对矿质元素的吸收和根的呼吸作用有关，下列哪种条件更有利于根对矿质元素的吸收(   ) 

A．疏松的土壤

B．板结的土壤

C．水淹的土壤

D．缺氧的土壤

第一节: 完形填空（共10小题；每小题2分，满分20分）

In the United States, students need more than good grades to impress teachers and employers. They also need to     21     social and practical experience. Many students do this by     22     clubs. These clubs can be related to academics or recreation, everything from math to chess and music.

Students     23    seek internships(实习) and jobs. Internships usually do not pay, but they help students learn more about a     24     that interests them. For example, students who are interested in politics    25    to work on a local politician's campaign.

Students are often taking stress. They are     26     running from class to club, to community service, to internship, to Starbucks and     27     to class again and again and again. These experiences also give students     28     contacts inside a particular industry. They often get letters of recommendation and win more employment     29    . However, extracurricular responsibilities can affect students'    30     in the classroom. If they are not very organized, they can easily become lost in their schoolwork and overwhelmed with pressure.

21. A. learn        B. gain        C. win           D. serve

22. A. attending    B. opening     C. contacting    D. joining

23. A. also         B. either      C. never         D. ever

24. A. subject      B. society     C. lesson        D. field

25. A. pretend      B. volunteer   C. continue      D. expect

26. A. fast         B. busy        C. active        D. right

27. A. thus         B. forever     C. often         D. then

28. A. valuable     B. formal      C. remote        D. regular

29. A. relationship B. friendship  C. opportunities D. campaign

30. A. homework     B. assignment  C. performance  D. understanding

论述政府供地中的国有土地使用权拍卖程序。

颅后窝占位病变可引起下列哪种

A．幕下疝
B．钩回疝
C．小脑扁桃体疝
D．海马回疝
E．扣带回疝

If a cargo of kerosene were considered too lean to explode, then it must be（）.

A.above the explosive range

B.within the explosive range

C.below the explosive range

D.None of the above