选择题：He pointed at the new car and asked, "___ is it? Have you ever seen it before?"

题目内容：

He pointed at the new car and asked, "___ is it? Have you ever seen it before?"

A.Why

B.Where

C.Who

D.Whose

参考答案：【答案仅供学习，请勿对照自行用药等】

We thought they had come to repair the phone, but ____, they were robbers.

We thought they had come to repair the phone, but ____, they were robbers.A.in realityB.in additionC.

分类：习题答案题型：选择题

分类：习题答案题型：选择题

氧气对水生动物来说，属于( )A.综合因子B.一般生态因子C.替代因子D.限制因子

分类：习题答案题型：选择题

目前全球气候异常主要是由于“温室效应”。( )此题为判断题(对，错)。

分类：习题答案题型：选择题

能量流动、物质循环和信息传递是生态系统的主要功能。( )此题为判断题(对，错)。

分类：习题答案题型：选择题