问题详情:
___ it carefully can we hope to find a way to solve the challenging problem.
A.When we observe B.When to observe
C.That we should only observe D.Only by observing
【回答】
D
知识点:倒装与省略
题型:选择题
问题详情:
___ it carefully can we hope to find a way to solve the challenging problem.
A.When we observe B.When to observe
C.That we should only observe D.Only by observing
【回答】
D
知识点:倒装与省略
题型:选择题