单项选择题

When a psychologist does a general experiment about the human mind, he selects people______ and asks them questions.

A．at length
B．at random
C．in essence
D．in bulk
<上一题 目录 下一题>
热门 试题

单项选择题
He wrote a book about computer in_______ with one of his colleagues.
A．criterion
B．correspondence
C．collaboration
D．counterpart
单项选择题
In Scotland, as in the rest of the United Kingdom,_______ education begins at age 5 and ends at age 16.
A．compelling
B．forced
C．obliged
D．compulsory
相关试题