MSDS代表的是什么？

请完成下列句型转换。

1. I will go to Hong Kong by plane tomorrow afternoon. (对画线部分提问)

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2. Mary is going to leave here next Monday. (对画线部分提问)

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3. He will play football with his friends next Sunday. (对画线部分提问)

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4. They are going to spend their holiday in England. (变为一般疑问句)

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5. Tom is going to buy a birthday card for his mother. (改为否定句)

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SECTION C (12 points)

Direction: Complete the following passage by using one word that best fits the context.

Winter swimming has become popular in Beijing. Many years ago,  48  people would go swimming in the city waters. But now there is a winter swimming club,   49   has more than 2,000 members. The oldest is 84 years of age and the youngest is only 7. The members are from all walks of life. They may be workers, peasants, soldiers, teachers and students. Even though it is now the coldest time of the season and the water   50  is around 0℃, many winter swimmers still swim in the icy waters. They enjoy   51   in the lake, while people by the water are wearing   52  clothes.

Why are so many people interested in winter swimming? Because it can do   53  to your health.

Bei Sha is   54  good example, he is 69 years old, and he once suffered from heart trouble for 26 years. After ten years of winter swimming, he is now   55  good health.

依次填入下列各句横线处的词语，最恰当的一组是                                  (    )

①3月4日上午，姜恩柱在十一届全国人大一次会议首场新闻发布会上特别说明，中国坚持奉行

     性的国防政策，不会对任何国家构成威胁。

②中国移动董事长王建宙3月3日出席政协会议时表示，没有收到任何电信业重组的消息，但认为业内出现    是趋势，可使资源得到更有效地运用。

③杭州的网吧业主在签约“阳光网盟”后，可以在获得中国电信安全、稳定、可靠的网络服务的同时，与提供信息化服务的厂商进行直接的    与交流。

A．防御整合沟通

B．防御整治勾通

C．抵御整治沟通

D．抵御整合勾通

在2016年4月6日党中央召开的“两学一做”学习教育工作座谈会上，刘云山同志讲话指出，强化问题导向，对于要重点解决的问题，对全体党员提出要重点解决哪些方面的问题？

压井效果好坏取决于压井液压力与油层压力的对比关系和（）。

A.压井本身的性质

B.井深

C.PH值

D.胶体率