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【单选题】
洋金花为茄科植物陀罗和陀罗的花，为常用中药。具有平喘止咳，镇痛止痉功效，主治哮喘咳嗽，心腹冷痛，风湿痹痛，跌打损伤，小儿慢惊；外科麻醉。生物碱为其主要有效成分。洋金花中的生物碱主要是（）A.
吲哚类
B.
异喹啉类
C.
莨菪烷类
D.
喹喏里西啶类
E.
有机胺类
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举一反三
【单选题】None were fully aware of the unsafe conditions for loading ammunition until the explosion occurred.
A.
Y
B.
N
C.
NG
【单选题】It is only when you overcome all difficulties and reach your goal ______ fully aware that the way to success is not paved with flowers.
A.
do you become
B.
then you become
C.
that you become
D.
have you become
【简答题】Ben is fully aware that if not properly managed，his shirt factory will have to close down in less than a year．
【单选题】The people are fully aware ______ they have before them problems and difficulties of various kinds.
A.
of that
B.
what
C.
that
D.
which
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