2011-2-4.苯甲醚的结构为 。 (答题说明:请将结构写在纸上,自我判断答案正确与否选择B或C,提交之后查看答案解析,核对答案。)(3分) A. 所有“非选择题”的题型,采用两次半自动测试方法。 具体步骤为: 第一次测试时把正确答案写在纸上,交卷之后仔细阅读解析,判断答案是否正确; 第二次测试,根据自己的答案是否正确选择B或C。 B. 答案正确,请选B C. 答案错误,请选C
【单选题】If you're relying on Grandma to help with child care, it's time to reconsider. A new study of more than 54 000 women found that those who watched their grandkids 9 hours a week or more were 55% more l...
A.
grandparents take care of younger children
B.
young people be careful about their parents
C.
old women spend more time taking care of their own health