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【判断题】
活性混合材料之所以具有水硬性，是因为其主要化学成分为活性氧化铝和活性氧化硅。A.
正确
B.
错误
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举一反三
【单选题】_______ his arrival at the airport , the film star was recognized and soon surrounded by a group of film stars．
A.
At
B.
Over
C.
On
D.
to
【单选题】As early as his second film, Chaplin had developed his own manner of acting, the one that ________world famous.
A.
would become
B.
had become
C.
was to become
D.
became
【单选题】His uncle made a film _______ his story in his childhood.
A.
based on
B.
was based on
C.
basing on
D.
to base on
【简答题】胃毒性药剂通常是从体壁进入体内的。()
【简答题】通常把从()到( )作为大气层的厚度。
【单选题】His second film, 'Ideal Husband', ______ his fame as a film director.
A.
secured
B.
enforced
C.
established
D.
confirmed
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