【单选题】
Its bad ________ for you to smoke in the public places where smoking is not allowed.
①
：behavior
②
：action
③
：manner
④
：movement
【单选题】
Its bad ____ for a man to smoke in the public places where smoking is not allowed.
①
behavior
②
action
③
manner
④
movement
【单选题】
This is the military ____, and nobody is allowed to get in without permission. ?
①
bond ?
②
B. zone ?
③
uniform ?
④
zoo ?
【单选题】
Nothing must be allowed to ____ with our plans for the weekend.
①
influence
②
affect
③
break
④
interfere
【单选题】
Farmers are allowed to grow small gardens of their own and they sell their vegetables ____ the black market.
①
on
②
at
③
in
④
for
【单选题】
Farmers are allowed to grow small gardens of their own and they sell their vegetables _____the black market.
①
on
②
at
③
in
④
for
【单选题】
C语言中while与do-while语句的主要区别是（ ）。
①
do-while的循环体至少无条件执行一次
②
do-while允许从外部跳到循环体
③
while的循环体至少无条件执行一
④
while的循环控制条件比do-while的严格