电流通过人体的途径不同,通过人体心脏电流大小也不同,()的电流途径对人体伤害较为严重。
A.从右手到脚
B.从左手到脚
C.从手到手
D.从脚到脚
参考答案:A
阅读下面短文,根据以下提示(1)括号内汉语提示;(2)该词首字母提示;(3)上下文语境提示,在每个空格内填入一个适当的英语单词,使短文通顺,所填单词要求拼写正确,形式符合英语表达习惯。(10分)
It is important for us to have a good mood in our daily life.
If you own a good mood, you will find everything around is ________(精彩) 76 ________in the world. M______ importantly, you will have an optimistic effect77 ______________ people about you. Certainly, we will live a harmonious and happy78 ________life. It is also good for your own h________. However, sometimes when you79 ________meet some ________(困难), when you quarrel with some others or when you80 ________________(失败) in doing something, you may have a terrible mood. If so, you81 ________should get _______of such a bad mood as soon as possible.82 ________ ______ is known to all, every coin has its two sides. So you should 83 ________think more about the b________ side. We are sure that everything will be all84 ________right with time p________ by. Remember—only you can make yourself feel85 ________happy.
I hope that everyone has an excellent mood every day!
催化反应的过程有哪几步?常规操作可调整的有哪些?