1. While play is important at all levels of human development, _________ takes on particular significance when children are five and six years old.
A. it
B. and
C. which
D. because it
答案:A
分析:缺主语。it 在这里作为形式主语。
参考译文:比赛对各个层次人的发展都是重要的,尤其是当小孩5、6岁大的时候,意义重大。
2. During the second and third years of life, children gain _________ over their bodies.
A. control increasing
B. increasing to control
C. control is increasing
D. increasing control
答案:D
分析:缺宾语,而且应该是 adj.修饰名词,只能选D.
参考译文:在生长的第二第三年,小孩们对自己的身体控制能力增强了。
3. All brass instruments use a mouthpiece _________ into a long cone-shaped tube.
A. is inserted
B. that inserted
C. that is inserted
D. and inserted
答案:C
分析:that引导一个定语从句,mouthpiece为先行词。A 出现两个谓语动词,错;B,D应该用被动;
参考译文:所有的铜管乐器都用一个放在长锥筒形管里的吹嘴。
4. By the mid-twentieth century, United States presidential staffs, _________ had numbered fewer than ten a century earlier, numbered in the hundreds.
A. as
B. that they
C. which
D. and
答案:C
分析:非限制性定语从句,只有which能引导非限制性定语从句
参考译文:到20时间中期,美国的总统部官员达到了几百个,而在一个世纪前,还屈指可数呢。
5. In 1966 only 60 percent of all five year olds in the United States attended kindergarten, _________ in 1985 almost 82 percent did so.
A. with
B. which
C. whether
D. while
答案:D
分析:整个句子中出现了两个谓语,缺连接词。
参考译文:在1966年,所有5岁的小孩中只有60%的参加了幼儿园,而到1985,几乎有82%的小孩上幼儿园了。