搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A1/A2型题

肿瘤经照射后一段时间，细胞的乏氧水平可低于照射前，是因为发生了（）。

A.再群体化

B.放射损伤修复

C.乏氧细胞再氧合

D.细胞周期再分布

E.以上均不对

答案

参考答案：C

单项选择题 A1型题

下列除哪项外均为药材儿茶的鉴别特征（）

A.来源于豆科植物儿茶

B.呈方形或不规则块状，质硬，易碎

C.表面棕褐色或黑褐色，光滑而稍有光泽

D.断面不整齐，具光泽，有细孔，遇潮有黏性

E.气微，味酸
查看答案
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)________.
查看答案