问题
选择题
We often provide our children with toys, footballs or basketballs, _______ that all children like these things.
A.thinking
B.think
C.to think
D.thought
答案
答案:A
thinking that引导原因状语从句。
We often provide our children with toys, footballs or basketballs, _______ that all children like these things.
A.thinking
B.think
C.to think
D.thought
答案:A
thinking that引导原因状语从句。
如图是用一氧化碳还原氧化铜的实验装置图.
(1)实验时,要先通入一氧化碳,过一会儿再给氧化铜加热,其原因是______.
(2)根据实验事实填写下表:
观察到的现象 | 发生反应的化学方程式 | |
A处 | ||
B处 | ||
C处 |