单选题：Evidence collected by the spacecraft on Mars shows some pres

题目内容：

Evidence collected by the spacecraft on Mars shows some present volcanic action， though the volcanoes are believed to be dormant if not dead.

参考答案：

答案解析：

We have been told that under no circumstances we can use the

We have been told that under no circumstances we can use the telephone in the of

分类：2级题型：单选题

Two substitutes were used during the critical basketball game last night．

分类：2级题型：单选题

分类：2级题型：单选题

分类：2级题型：单选题

The patient says he dreads__________ neighbors to carry him and his wheelchair u

分类：2级题型：单选题