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问题 单项选择题

常务委员会可以安排参加视察或者专题调查研究的（）列席常务委员会会议，听取专项工作报告，提出意见。

A、人大代表

B、群众

C、常委会组成人员

D、工作人员

答案

参考答案：A

单项选择题

Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap.For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users.Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century, there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States.A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice.

The author of this passage seems to be________.

A．against aspirin

B．in favor of aspirin

C．ignorant of aspirin

D．disinterested in aspirin
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单项选择题

截面直径为d的等直径圆杆，在外力偶矩作用下发生纯弯曲变形，若己知变形后中性层的曲率半径为户，材料的弹性模量为正，则该梁两端所承受的外力偶矩M的大小应为（）。

A．A

B．B

C．C

D．D
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