问题

t ______ research intoheart disease and its effects on the body, we do not have adequate substitutesfor the use of animals.

A:refers to
B:related to
C:comes to
D:talks to

正确答案是：

同类题型

The dam was not strong enough to _____ the flood waters. The people living there had to remove from their houses.

What is your aunt—- She is _________.

There are ____ people in the train.

ssion in the class, he was scolded bythe teacher

Oh, my goodness! My laptop must have got stolen． —– But where _____ a thief have entered the house with all the doors and windows still locked?