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问题 单项选择题

cAMP对转录起始的调控是

A．单独与操纵基因结合，封闭其基因表达
B．以cAMP-CAP复合物与操纵基因结合，使该基因开放
C．与RNApolⅡ结合，促进酶的活性
D．与阻遏蛋白结合，去阻遏作用
E．与增强子结合，促进转录

答案

参考答案：B

单项选择题

盘盈的固定资产进行计量，常用的会计计量属性是（）。

A.历史成本

B.重置成本

C.可变现净值

D.现值
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填空题



Despite (1) that alcoholic beverages may (2) , a leading medical expert is advising: don’t (3) just yet.
Anybody who’s ever worked in a hospital sees the hospital is full of patients that have (4) disease, but the hospital is not full of patients that have disease related to cholesterol and (5) .
In an (6) in the current New England Journal of Medicine, Dr. Goldberg of Columbia University said it is time to see (7) prevents heart disease. Such a study would give (8) to one group of heart disease patients and not to another, and see (9) .
In the latest study, which followed (10) over a 12-year period, researchers found that those who drank (11) drinks per week (12) of heart attack by (13) compared to (14) .
The lead author, (15) Kenneth Mukamal of Beth Israel Deaconess Medical Center in Boston, insists his study is (16) . For one thing, other studies have not looked at (17) .
Dr. Mukamal says (18) also appear to settle which alcoholic beverage are (19) . "Beer and spirits, beer and liquor, were most ply (20) ."
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