题目内容

预防饮水所致地方性氟中毒首要措施是

A. 改善营养
B. 更换水源
C. 移民
D. 水中除氟
E. 投药

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麦淀粉膳食适用肺性脑病、急慢性肾功衰竭。( )

A. 对
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The author believes that sporting activities（）.

A. are forms of biological development
B. have actually developed from hunting
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Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20. For one of the studies, scientists from Canada noted a sharp decrease in ______ kinds of great sharks since the nineteen eighties.

A. 8
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广告正走进人们的生活。2．广告能提供我们大量的信息。3．然而，广告不一定都真实。

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预防饮水所致地方性氟中毒首要措施是

A. 改善营养 B. 更换水源 C. 移民 D. 水中除氟 E. 投药

麦淀粉膳食适用肺性脑病、急慢性肾功衰竭。( )

The author believes that sporting activities（）.

Questions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20. For one of the studies, scientists from Canada noted a sharp decrease in ______ kinds of great sharks since the nineteen eighties.

广告正走进人们的生活。2．广告能提供我们大量的信息。3．然而，广告不一定都真实。

A. 改善营养
B. 更换水源
C. 移民
D. 水中除氟
E. 投药