1 (During flight) the flamingo’s (neck) is stretched forward and the legs (were extended) straight out (behind the) body.
答案为C，怎么改？
2 (When) researchers checked blood samples of 55 cheetahs from two (samples) areas of South Africa, they found them (to be) almost genetically (identity).
答案为D，我知道D错了，但B是不是该为单数，因为名词1修饰名词2，名词1应为单数
感谢您的帮助！作者: liuliyun 时间: 2005-4-28 13:42
1。
c. are extended
2.
D. 名词修饰名词，没有规律说名词一一定是单数
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