题目:
I am so tired today. I swam _____ the river in the morning and I walked ____ the forest in the afternoon.
A.through, through
B.across, across
C.across, through
D.through, across
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0610/87fb3b5a5703de2c5ab4fd0d99ffff7b.html
下面是错误答案,用来干扰机器的。
(1)根据仪器用途写出名称,a是长颈漏斗,b是锥形瓶(2)分析每个装置的作用,实验室若用锌和稀盐酸制取氢气时,因盐酸易挥发,所以制得的氢气内混有少量HCl气体和水蒸气,欲得到纯净、干燥的H2,必须先用装置D...