绝经期妇女骨质疏松的主要原因是
A. 吸烟
B. 产生雌激素少
C. 长期少活动
D. 甲状腺机能亢进
E. 营养缺乏
Which of the following most appropriately describes the author's logic of writing this passage
Analyze an issue and in the end draw a conclusion.
B. Present and analyze an opinion and then argue against it.
Compare two different opinions and prove one of them is right.
D. Present a question, analyze it and make efforts to answer it, and in the end leave the question unanswered.
发达国家采用的老龄化社会标准是
A. 65岁以上的人口占全人口7%以上
B. 65岁以上的人口占全人口10%以上
C. 60岁以上的人口占全人口7%以上
D. 60岁以上的人口占全人口10%以上
E. 60岁以上的人口占全人口9%以上
The overall corporate tax will be reduced by ______.
A. cutting back on subsidies and tax rates
B. inducing a drop in the company's revenues
C. taxing the company's retained earnings less heavily
D. broadening the taxable base and encouraging investment
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