问题

The research lacks evidence, and therefore, its conclusions are doubtful.
A:solid
B:fierce
C:severe
D:potential
B:fierce
C:severe
D:potential
正确答案是:
同类题型
They did not find _____ to prepare for theworst conditions they might meet.
What happened to the young trees we planted?— The treeswell, but I didn’t water them.[ ]
s warn that medical waste from hospitals, if properly, may lead to spreading diseases.
. Isn’t it lovely to think that I______myself on the sunny beach tomorrow at this time