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问题 选择题

可以证明“非洲和南美洲以前连在一起”的证据包括（　　）

①古生物化石 ②现代自然带的分布  ③地层构造  ④地形地貌的相似性．

A．①②

B．②④

C．③④

D．①③

答案

世界一些地方的大陆轮廓的凹凸十分吻合和，非洲和南美洲生活着不会飞的同种海牛和鸵鸟，古老地层相似可以作为大陆漂移假说的证据．

故选：D．

单项选择题

钩虫病最主要的临床表现是（）

A.皮炎

B.肺炎

C.贫血

D.柏油样便

E.腹泻
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句型转换

根据所给提示，完成句子，每空一词，含缩略词。

1. Martin used to give his mother a lot of trouble. (改为否定句)

    Martin _________ _________ to give his mother a lot of trouble.

2. This English-English dictionary belongs to Fred. (对划线部分提问) 

    __________ does this English-English dictionary _________ to?

3. To keep healthy, more and more people prefer walking to driving. (同义句)

    To keep healthy, more and more people would walk __________ _________ drive.

4. I am sure that I can succeed in the final examination. (同义句)

    I am sure _________ my _________ in the final examination.

5. 我会尽快回复您的邀请。(完成译句)

    I will _________ _________ your invitation as soon as possible.

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