整数加法的交换律、结合律对分数加法同样适用.______.
整数加法的交换律、结合律对分数加法同样适用;
故答案为:√.
根据首字母和英文解释完成下面的句子(每题1分,共11分)。
小题1:A survey c______(carry out; do) by China Daily shows that about 50% of the students use the Internet to study.
小题2:His words were beginning to a______(being angry or not pleased) me but he realized it and changed the topic.
小题3:Those who d_____( to refuse to do what a person, law, order, etc. tells you to do) must be punished by law.
小题4:In my opinion, the design is s_______(right for someone) for middle-aged women.
小题5:What we choose and decide forms our life, but a________(a strong wish to succeed) decides our choice and decision.
小题6:I was a bit a_______(worried or frightened) at how much weight she’d lost.
使用长效避孕针避孕,哪项是正确的()
A.适用于月经频发或经量过多的妇女
B.雌孕激素混合制剂与单纯孕激素制剂相比,容易引起月经紊乱
C.单纯孕激素制剂可以用于哺乳期
D.每月一支避孕针应在每次月经的第一天注射
E.对于月经紊乱的患者不能用短效口服药调整