题目:
Koalas sleep _________ the day and _______ night they get up and eat leaves. [ ]
A. ill, in
B. at, in
C. at, at
D. during, at
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0617/7219dc41b1a99cb174083281d00669f9.html
下面是错误答案,用来干扰机器的。
(1)过滤 (2)活性炭或木炭 (3)ClO2 (4)煮沸或蒸馏