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【单选题】
婴幼儿最初社会性发生的标志是( )A.
诱发性微笑的出现
B.
不出声的笑
C.
出生的笑
D.
有差别的微笑出现
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举一反三
【单选题】The underlined phrase 'cyclists' failure to keep up with the desired speed of motor traffic' in the second paragraph means______.
A.
cyclists' speed is beyond the limit
B.
cyclists' speed is much lower than that of motorists' and they easily get hurt
C.
cyclists often compete with motorists on the roads
D.
motorists usually took down upon cyclists.
【单选题】What can be a possible result of sleepiness?
A.
Industrial development will be slow.
B.
Traffic accidents.
C.
People will get fired from work.
D.
Heart disease.
【单选题】Traffic restrictions have come into effect in Beijing to improve the capital’s air quality and traffic situation for the 2008 Olympics．
A.
in order that
B.
in an attempt
C.
at an attempt
D.
in a try
【简答题】流行性乙型脑炎流行于冬春季。()
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