Directions: Put the following sentences into Chinese. All of them are taken from the passages you have just read.

　　71. Recent studies have shown that the behavior of rats is greatly affected by space.

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　　72. At least six hundred languages have been developed in the search for a language which all human beings would be able to speak.

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　　73. Throughout this century English has grown more and more important. It has become a second language for many millions of people.

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　　74. By comparison, an earthquake of similar intensity that shook America in 1988 claimed 25, 000 victims.

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　　75. The new designs should offer even greater security to cities where earthquakes often take place.

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　　Section B Directions: Put the following sentences into English.

　　76. 我过去常常浪费很多时间玩游戏。

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　　77. 理论上说，你的计划听上去不错，但实际上行得通吗?

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　　78. 小女孩的歌声给老人带来了欢乐，帮住他忍受住种种生活的艰辛。

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　　79. 这个倔强的男孩不愿意听从父母的忠告。

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　　80. 只要你一辈子不停地努力工作，你在回忆往事时就会感到心满意足的。

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