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【判断题】
中间环节的作用是把电源和负载连接起来,从而形成闭合回路,并完成对电路实行控制、保护或测量的功能。A.
正确
B.
错误
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【单选题】Hibernation is a seasonal practice. This means it ______.
A.
takes place only during a particular season
B.
occurs only during the night
C.
is a daily practice
D.
only happens when a species becomes over-populated
【单选题】患者,男，51岁，慢性支气管炎，患者因淋雨后出现气喘入院，病室每日定时通风。通风作用以下哪项不正确
A.
调节室内湿度
B.
降低室外空气污染程度
C.
降低室内细菌密度
D.
保持室内空气新鲜
E.
增加患者舒适感
【单选题】There are only _______ natural resources as there were thirty years ago. [ ]
A.
as half much
B.
as half many
C.
half as much
D.
half as many
【简答题】In my opinion, playing video s not only takes much time but is ____________(也有害健康).
【单选题】One of the first lessons that you learn if you want to be a painter is that it takes only a few basic colors to mix just about any conceivable color. And once that fundamental skill has been acquired,...
A.
the few basic colors are more important than any mixed color
B.
mixing colors can be very difficult
C.
colors have very strong expressive powers
D.
a single color is more mysterious than colors in combination
【单选题】When asked why he prefers bikes to buses, the professor said, “Riding a bicycle takes __________ half an hour, but it’s more convenient and environmentally friendly. ”
A.
absolutely
B.
accurately
C.
approximately
D.
exactly
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