十周岁以上的未成年人不可以从事的活动是()。
A. 进行满足其日常生活需要的数额不大的民事行为
B. 只取得利益而不承担义务的行为,如接受赠与奖励
C. 独立进行民事活动
D. 接受以自己的行为获得的人身权利和财产权利
The phrase "ward off' in the fourth paragraph is closest in meaning to
A. cure.
B. keep away.
C. worsen.
D. relieve.
From the passage, we learn that the author
A. feels it necessary to take vitamin pills.
B. thinks pill-takers are healthier than those who don't.
C. suggests high doses of vitamins may result in heart disease.
D. finds out an unsatisfied conclusion about taking multivitamins.
数据-1,0,3,5,x的方差是34/5,则x=().
A. -2或5.5
B. 2或5.5
C. 4或11
D. -4或-11
E. 3或10