By quoting the growing percentage points of the aged in the population, the author seems to imply that______.
A. the country will face mounting problems of the old in future.
B. the social welfare system would be under great pressure.
C. young people should be given more moral education.
D. the old should be provided with means of livelihoo
Students requiring course materials should ______.
A. buy them from the secretary
B. buy them in the main hall
C. register with the secretary
D. go to the bookstore afier 10a. m.
引产后，采用何种避孕措施为宜
A. 口服避孕药
B. 阴茎套
C. 避孕针
D. 皮下埋植
E. 宫内节育器
下列哪项检查与确诊无关
A. 探针法
B. 宫腔镜
C. 腹腔镜
D. 子宫造影
E. B超检查
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