The letter wasn’t addressed to me but I opened it out of curiosity．

单项选择题The passage mainly discusses（）.

A．a new way of highway speed control
B．a new pattern for painting highways
C．a new way of training drivers
D．a new type of optical illusion

问答题外语学习的基本条件是什么

单项选择题The underlined word vulnerable in the fourth paragraph probably means（）.

A. sick
B. weak
C. wounded
D. old

单项选择题第（1）空应选择（）

A.with 
B.for 
C.against 
D.to

多项选择题形成性评价与总结性评价的( )不同。