A.intensifyB.recognizeC.stainD.classifyThese problems，a……

单项选择题It is（）for all motorcyclists to wear helmets according to the new regulation.

A.optional
B.compulsory
C.voluntary
D.secondary

单项选择题It is important to（）strict restrictions on publishing writings nowadays.

A.repose
B.impose
C.expose
D.dispose

单项选择题The deeper you go into the novel，the more you begin to understand and（）with the characters.

A.sympathize
B.concentrate
C.demonstrate
D.maximize

单项选择题The police made an （）to the public to remain calm.

A.appeal
B.connect
C.pierce
D.charge

单项选择题Your passport application form should be（）by two recent photographs.

A.accompanied
B.accounted
C.accelerated
D.accommodated