问题

What do you think of the 3D-printed ______—I’m afraid they are not safe enough to live in.

A:tools
B:buildings
C:cars
D:toys;

正确答案是：

同类题型

_____ it will do us harm or good remains to be seen.

________. Could you tell me the way to the station

How long have you _____ here— About four years.

下列各句中加横线词语的意思与现代汉语不同的一项是（）

Do you often _____ information for your lesson on the Internet -Yes, I do.