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问题 填空题

鸡、兔同笼，一共有94只脚，兔比鸡少11只，鸡有______只，兔有______只．

答案

设兔有X只，则鸡有（X+11）只，

4X+2×（X+11）=94，

4X+2X+22=94，

6x+22=94，

6X=72，

X=12；

鸡：X+11=12+11=23；

答：，鸡有23只，兔有12只．

故答案为：23，12．

单项选择题

脑脊液采集的第一管用作下列哪项检查（）

A．细菌培养

B．化学分析

C．免疫学检查

D．一般性状检查

E．显微镜检查
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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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