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问题 单项选择题 案例分析题

读中纬度某内陆地区地形和气温分布图，回答小题。

x和z纬度相差2°，甲、乙、丙、丁四地年太阳辐射总量最大的是（）

A.甲

B.乙

C.丙

D.丁

答案

参考答案：C

选择题

Only after _____ her accusation _____ her case. [ ]

A. she made; did the police take up

B. did she make; the police took up

C. did she make; did the police take up

D. she made; the police took up

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单项选择题

用紫外线照射细菌后，可以检测到其 DNA修复酶的基因表达增强，这种现象称为

A．组成性基因表达

B．诱导表达

C．阻遏表达

D．正反馈阻遏

E．负反馈阻遏
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