The new pills seemed to be a solution to ______.
A. the problem of overweight that has obsessed Americans for a long time
B. the problem that is of great weight and significance
C. heart disease, diabetes, and stroke
D. the side effects of weight-loss drugs
查看答案
下列诗人生活在盛唐的是
A. 李白
B. 自居易
C. 李商隐
D. 陈子昂
What can we infer from the last paragraph of the article
A. The severely fat patients are threatened with potential illness.
B. The diet-pills have been sold to all comers without discrimination.
C. The diet-pills should not have been hailed as miraculous cures and then discarded as dangerous drugs.
D. The diet-pills were intended to a short-term cure for the very fat.
样本相关系数的假设检验，其备择假设为
A. ρ＝0
B. r≠0
C. ρ≠0
D. 两变量相关关系密切
E. 两变量有直线相关关系
The underlined phrase in the first paragraph "pill poppers" most probably refers to ______.
A. pill inventors
B. pill takers and abusers
C. pill manufacturers
D. pill distributors
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