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问题 单项选择题

把人的红细胞分别置于0．9％食盐水、10％食盐水和清水中，结果是（）

A.质壁分离、缩小、原状

B.原状、质壁分离、质壁分离复原

C.原状、缩小、

D.缩小、质壁分离、质壁分离复原

答案

参考答案：C

解析：把人的红细胞分别置于0．9％食盐水，细胞吸水和失水处于动态平衡，细胞保持原状；把人的红细胞分别置于10％食盐水，外界溶液浓度高于细胞内液浓度，细胞失水皱缩，但是不能发生质壁分离，因为成熟的植物细胞才能发生；把人的红细胞分别置于清水中，细胞吸水胀破；答案选C。

多项选择题 X型题

AlT在下列哪些疾病可明显升高（）

A.溶血性黄疸

B.肝组织严重受损

C.急性病毒性肝炎

D.广泛肌萎缩

E.胆囊炎
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单项选择题

German Chancellor Angela Merkel won over German voters in the Federal Election on Sept. 27. Can she now be won over by a French charm offensive (1) at repairing the relationship that was once at the heart of Europe That’s the question being asked in Paris, (2) top government officials are (3) talking about their desire to rekindle closer ties (4) their neighbors across the Rhine. (5) the end of World War II the Franco-German relationship has been the motor of European integration, the (6) force behind the creation of the European Union and, more recently, the introduction of the euro. But the ardor has (7) in this decade, particularly under Merkel, who has regularly struggled to (8) her irritation with French President Nicolas Sarkozy’s grandstanding. Sarkozy, (9) , has often been impatient with what he (10) Merkel’s lack of resolve.

The sometimes (11) personal rapport is a long way from the public shows of affection their predecessors staged, particularly Helmut Kohl and FranCois Mitterrand, who movingly held (12) in 1984 in a Verdun cemetery. There’s been tension on (13) , too. Charles Grant, director of the London-based think tank Centre for European Reform, points out that France and Germany have been (14) on issues from how best to reflate their economies during the economic (15) to the smartest strategies for dealing with Russia.

But influential movers in France are now (16) to put the relationship back on a friendlier footing. In a recent paper French think tank Institute Montaigne (17) an ambitious agenda for the two nations, (18) that a new impetus is needed if Europe’s voice is to be heard in a world (19) of big new players, such as Brazil and India, and at a time when President Obama seems fax more (20) with China and the rest of Asia than with America’s traditional allies in Europe.

8（）

A.recover

B.discover

C.conceal

D.reveal
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