问题 单项选择题

聚丙烯酸酯是指()

A.控释膜材料

B.骨架材料

C.压敏胶

D.背衬材料

E.保护膜材料

答案

参考答案:C

解析:本题考查经皮给药制剂的处方材料组成。经皮给药制剂的常用材料分为控释膜材料、骨架材料、压敏胶、背衬材料、药库材料和保护膜材料。控释膜材料常用乙烯一醋酸乙烯共聚物。骨架材料常用一些天然与合成的高分子材料,如亲水性聚乙烯醇和疏水性聚硅氧烷。常用的压敏胶有聚异丁烯、聚丙烯酸酯和聚硅氧烷三类。背衬材料常用由铝箔、聚乙烯或聚丙烯等材料复合而成的复合铝箔。保护膜材料常用聚乙烯、聚丙烯、聚碳酸酯、聚四氟乙烯等塑料薄膜。药库材料可以用单一材料,也可用多种材料配制的软膏、凝胶或溶液,如卡波姆、HPMC、PVA等,各种压敏胶和骨架材料也同时可以是药库材料。故本组题答案应选择BCAED。

阅读理解

News (March 6, 2008) that Microsoft was making a $44.6 billion bid to buy Yahoo was greeted with heated discussion by many Internet users on Friday. Here are some responses:

Mark Galeassi of Kansas City, Missouri

This is the best move for both parties. Yahoo has the ideas and Microsoft has the money to finally market these ideas correctly. Microsoft and Yahoo are a perfect fit and the deal will be good for consumers.

Scott G. of New Jersey              

I was a Yahoo user for years along with Hotmail from Microsoft. Then Google came along... Google Earth, Google Toolbar and Gmail. Google is so innovative (创新的) with everything they do. Yahoo and Microsoft... same old story... I don’t think the merger(合并) will do anything for either company except improve the Yahoo shareholders’ bank accounts:

Michael Glosser of Estero, Florida

Right now, Yahoo offers a lot of features and tools at no cost for all different levels of Intemet users. Microsoft seeks nothing but profit. Undoubtedly, they’ll do nothing other than find ways to start removing Yahoo’s formerly non-priced features. Microsoft’s greed will ruin the great thing that Yahoo currently is.

Toni Suarez of Hacienda Heights, California

Perhaps it would bring better high technology innovations to e-mail and help in researching and developing a better Internet!

Antonio Simmons of Parkville, Maryland

Microsoft purchasing Yahoo would be nothing more than an attempt from Microsoft to further impose upon the users their poor-quality software and obtain more wealth for the company. In my opinion, they will never be able to compete with Google because Yahoo and Microsoft’s current search engines are too inferior (差的) to compete. Even if combined, they still lack.

77. Who is in favor of the merger of Microsoft and Yahoo?

A. Antonio Simmons.  B. Michael Grosser.    C. Scott G.      D. Mark Galeassi.

78. In the opinion of Scott G.,   

A. the merger will contribute to Microsoft

B. Yahoo and Microsoft are lacking in innovation

C. Google is getting short of management experience

D. the merger will allow Microsoft to overtake Google

79. Michael Grosser is afraid that

A. the merger will cost Yahoo’s free features

B. the merger will lead to Microsoft’s monopoly (垄断) of the market

C. the increased competition will force Google out of the game

D. Intemet users will have to buy Microsoft’s costly software

80. What is Antonio Simmons’ attitude towards Google?

A. Doubtful.          B. Disapproval.    C. Positive.       D. Negative.

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