问题

He________ his experiments and made a great contributionto our country.[ ]

A: dived himself into
B: devoted himself into
C: dived into
D: devoted to

正确答案是：

同类题型

cident turned him into differentperson, even if he did not realize it at beginning.

My friend ________a new shirt ________ me.

_______ we have planned ahead might change when we putit into practice.

Excuse me, Could you tell__________ —Yes. Go along this street and you will find it on your left.

This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer