He was not _____ to the club because he wasn't a member.
A. allowed
B. admitted
C. permitted
D. approved
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Although he doesn't like that law, he will _____ with it.
A. confine
B. conform
C. comply
D. contend
An early typewriter produced letters quickly and neatly; the typist, _____couldn't see his work on his machine.
A. however
B. therefore
C. yet
D. although
The number of tickets _____ will be determined by the size of the stadium.
A. adaptable
B. acceptable
C. advisable
D. available
GSM网络中，为了增强抗干扰能力，引入的扩频技术是（）
A. 跳时
B. 跳频
C. 直接序列扩频
D. 跳频不直接序列扩频的结合
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