问题

trials, people are ________assigned to a “treatment” group, which benefits from the project, and a “control” group, which does not.

A:initially
B:conventionally
C:superbly
D:randomly;

正确答案是：

同类题型

I saw Jane and her mother in the shop around eight yesterday evening-ImpossibleShe TV with me in my home then

Is she your __________ — Yes, she is.

It was not _____ she took off her glasses _____ I realized she was a famous film star.[ ]

Zhang Liang was a cook years ago, but he______ a model over the years.

Have you ?— No. I had the wrong number.