By "his outdoor cousins" the author means______.
A. other experimenters
B. the other doves of the same brood (n.窝)
C. doves under the natural sky
D. other birds in general
查看答案
Which of the following should not be done in order to develop friendship？
A. Remember others' names.
B. Care about others.
C. Show interest in others' personal affairs.
【B9】
A. to hold
B. held
C. was held
Which of the following statements is true according to the passage？
A. Germany is the only country free from the drought.
B. Water reserves are at their lowest level in years due to the drought.
C. The drought is more serious in Britain than in France.
D. Europe will not have heavy rain until several years later.
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