选择题：_______ your valuable help, we couldn’t have finished the experiment ahead of ti

题目内容：

_______ your valuable help, we couldn’t have finished the experiment ahead of time.

A.If it were not for

B.Had it not been for

C.Were it not for

D.If it has not been for

参考答案：

答案解析：

They heard the_______ of swords and realized that the fighting began.

分类：教师资格题型：选择题

分类：教师资格题型：选择题

分类：教师资格题型：选择题

在小学教学教科书中，“统计与概率”这一内容按照由浅入深、由易到难的方式编排，使关键概念和基本原理得以重复出现，逐步扩展，这种教材编写方式属于（）。

分类：教师资格题型：选择题

Which of the following cannot be used as a way to show the stress pattern of words, phrases,and sent

分类：教师资格题型：选择题