治疗消化性溃疡疼痛效果最好的药物是（）。 A.黏膜保护剂 B.质子泵抑制剂 C.H2

—How did you like Nick’s performance last night?

—To be honest, his singing didn’t _______to me much

A．appeal

B．belong

C．refer

D．occur

B

Among the most popular books being written today are science fictions (小说). Hundreds of titles are published every year and are read by all kinds of people. Furthermore, some of the most successful films of recent years have been based on science fiction stories.

It is often thought that science fiction is a fairly new development in literature, but its forefathers can be found in books written hundreds of years ago. These books were often concerned with the presentation of some form of ideal society, a main subject which is still often found in modern stories.

Most of the classics of science fiction, however, have been written within the last one hundred years. Books by writers, such as Jules Verne and H.G. Wells, to mention just two well–known authors, have been translated into many languages.

In an age where science fact frequently overtakes (超过) science fiction, the writers may find it difficult to keep ahead of scientific advances. Those who are clear-sighted to see how the ways are going, however, may provide a valuable lesson on how to deal with the problems which society will unpreventably face as it tries to master its new technology and come to terms with a continually changing view of the world.

45. It can be concluded that modern science fiction ______

A. is worse than that in the past

B. shows the writer’s viewpoints

C. tells stories about men from other planets

D. has been written only by Jules Verne and H.G. Wells

46. From the article we get the impression that science fiction ______.

A. is popular

B. is a fairly new development in literature

C. reflects the technical advances in the past

D. describes things that happen in developed countries

47. Which of the following statements is true?

A. Science fiction is based on successful films.

B. Science fiction often overtakes science fact.

C. Writers may find it easy to keep ahead of scientific advances.

D. The writer who can see clearly the way we are going will give us valuable instructions.

从海水中提取镁，没有涉及到的化学反应是（   ）

A．Mg²⁺ + 2OH^- ="=" Mg(OH)₂↓

B．Mg(OH)₂ + 2HCl ="=" MgCl₂ + H₂O

C．Mg(OH)₂MgO + H₂O

D．MgCl₂Mg + Cl₂↑

成人骶管容积为（）

A.20～25ml

B.25～30ml

C.30～35ml

D.35～40ml

E.40～45ml

A国有企业的国有产权经确认为5000万元，并与B企业签订产权转让合同于2004年3月25日生效，双方约定在余款提供合法担保的前提下采取分期付款的方式支付转让价款。下列有关转让价款的支付期限约定，符合规定的是( )

A．B企业在2004年3月28日支付1000万元的首期付款，余款在2005年2月28日付清

B．B企业在2004年3月29日支付1800万元的首期付款，余款在2005年2月28日付清

C．B企业在2004年3月3()日支付2000万元的首期付款，余款在2005年5月30日付清

D．B企业在2004．年3月3()日支付2000万元的首期付款，余款在2005年12月31日付清