单项选择题

At each end of the tube ______, one which gathers light and one which magnifies the image.

A．are two lenses there
B．two lenses are
C．are two lenses
D．two lenses are there
<上一题 目录 下一题>
热门 试题

单项选择题
When two people feel the same about each other, their feelings are ______.
A．mutual
B．usual
C．joint
D．visible
单项选择题
American schools tend to put more emphasis on developing ______ skills than they do on acquiring quantities of facts. Students are encouraged to ask questions, think for themselves and express their own opinions.
A．critical-thinking
B．interpersonal
C．intellectual
D．social
相关试题