单项选择题

In the past, Straub's job was easy, because ______.

A．American families needed more money to live
B．American families had fewer children to support
C．American families had spare rooms to rent
D．American families were not as busy as now

<上一题目录下一题>

热门试题

单项选择题

What was tested in this experiment

A．The influence of IQ test.
B．The influence of selected teachers.
C．The influence of teacher expectations.
D．The influence of teaching methods and materials.

单项选择题

The children who were selected for the experiment gained more IQ points than the others because they were ______.

A．more clever
B．taught by different teachers
C．taught with new materials and methods
D．given more encouragement by their teachers