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【判断题】
A periodic sentence can be used to create suspense or expectation, thus drawing the listener’s attention to the end of the sentence. It can be used to produce humorous and emphatic effect.A.
正确
B.
错误
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举一反三
【简答题】巴比妥类药物结构中含有（）结构。与碱溶液共沸而水解产生（），可使红色石蕊试纸变（）。
【单选题】-Is this factory ______ we will have a short stay? -Yes, it is in this factory ______ we will have a big party. [ ]
A.
the one which; which
B.
the one where; that
C.
the one; that
D.
that; in which
【单选题】The first place _______ in the factory was the tool room.
A.
where we visited
B.
we visited in
C.
we visited
D.
which we visited
【单选题】巴比妥类药物与碱共沸，水解释放出氨气，是由于
A.
分子结构中含有硫元素
B.
分子结构中含有丙烯基
C.
分子结构中含苯取代基
D.
分子结构中含有羰基
E.
分子结构中含有酰亚胺基团
【单选题】Only the factory ____ yesterday ____ this kind of machines.
A.
did we visit; does it produce
B.
did we visit; produces
C.
we visited; produces
D.
we visited; does it produce
【单选题】If there is a shortage of factory laborers, we would expect
A.
the wages of factory laborers to increase.
B.
the wages of factory laborers to decrease.
C.
the prices of factory commodities to decrease.
D.
a decrease in the demand for substitutes of what this factory produce.
【单选题】以下关于山茛菪碱叙述不正确的是( )
A.
不产生心动过速、口干等副作用
B.
不易透过血脑屏障,中枢作用弱
C.
抑制腺体分泌和散瞳作用比阿托品弱
D.
治疗安全范围比阿托品大
E.
能改善微循环
【简答题】巴比妥类药物分子结构中含有丙二酰脲基团，其特性反应为
【单选题】鉴别巴比妥类药物的硝化反应，主要是利用该类药物结构中的
A.
不饱和碳氧双键
B.
不饱和碳氮双键
C.
互变异构中形成是羟基
D.
取代基中含有的双键
E.
取代基中含有的苯环
【单选题】The factory________ we visited yesterday was the one _______ I once worked.
A.
where; which
B.
which; which
C.
which; where
D.
where; where
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