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问题 选择题

盛有水的试管从竖直位置逐渐倾斜时（水不溢出），水对试管底部的压强将（　　）

A．不变

B．变大

C．变小

D．无法判断

答案

在试管倾斜时，水的总量不变，水的深度逐渐减小，根据公式p=ρgh可知，水对试管底部的压强逐渐减小．

故选C．

单项选择题

分泌性腹泻可见于下列疾病，但除外

A．慢性肠炎

B．霍乱

C．血管活性肠肽瘤

D．胃泌素瘤

E．小肠吸收不良综合征
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填空题

Kofi Annan says helping survivors of last week’’s earthquake and (1)________in the Indian Ocean is (2)________. The United Nations secretary-general says countries that have offered aid must (3)________and provide it. The offers add up to around (4)________dollars. United Nations officials say (5) ________of that is needed during the next six months.The concern about offers of international aid is (6)________. For example, the earthquake in Bam, Iran, in (7)________of 2003 killed more than (8) ________people. Countries and groups offered hundreds of millions of dollars (9) ________. The United Nations says it has (10)________only about (11)________dollars in aid received so far. Governments and organizations that offered help (12) ________that, however.On (13)________Mr. Annan met with world leaders in Jakarta, Indonesia to discuss aid for (14)________. The leaders discussed and (15)________the idea of (16)________owed by affected nations. But the leaders did not say they would do so. Some said that (17)________to survivors would be more helpful.Representatives of (18)________countries and international organizations attended the meeting in Jakarta. Officials say they will cooperate to develop (19)________ for the Indian Ocean and the (20)________.
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