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外语
Pigeons have been used as messengers because ______. In the fifth paragraph, the underlined word "it" refers to ______.
Pigeons have been used as messengers because ______. In the fifth paragraph, the underlined word "it" refers to ______.
admin
2009-05-15
43
问题
Pigeons have been used as messengers because ______.
In the fifth paragraph, the underlined word "it" refers to ______.
选项
A、the earth’s magnetic field
B、the sun
C、the built-in compass
D、the special way
答案
B
解析
第五段中,鸽子利用太阳来定方位,所以“it”指太阳。故本题答案为B。
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本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
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公共英语二级笔试
公共英语(PETS)
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