单项选择题

What is a common problem in American schools according to "Out of Shape"

A．Students spend too little time on physical exercise
B．A large number of children are overweight
C．Many students have unhealthy habits
D．Students' grades are getting lower

<上一题目录下一题>

热门试题

单项选择题

Crying for a Smoke suggests there is a cause-and-effect relation between

A．the mother's smoking and her baby's stomachache
B．the mother's annoyance and her baby's cries
C．research results and the babies' parents
D．dad's smoking and mom's smoking

单项选择题

One explanation given by scientists for the crop circles is that they are made by ______.

A．airplane crashes
B．air movement
C．unknown flying objects
D．new farming techniques