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【多选题】
避雷器的类型主要包括（ ）等。A.
保护间隙
B.
管型
C.
带型
D.
阀型
E.
氧化锌
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【简答题】科学工作者欲培育能产生含铁量较高的转基因花生新品种, Ti 质粒中含有潮霉素抗性基因,具体步骤如图: ( 1 )铁结合蛋白基因和 Ti 质粒用 ______________ 切割后,用 DNA 连接酶连接,获得重组 Ti 质粒。培养基 1 中经过 ______________ 得到愈伤组织,培养基 2 中筛选的方法是在培养基中加入一定量的 ______________ 。 ( 2 )若铁结合蛋白基...
【简答题】It is not unusual to see your desk-mate yawn (打呵欠) as he complains that he didn't have a good sleep the night before. Many s don't get enough sleep because they have too much homework, which keeps...
【简答题】He often complains about the noise from the busy street, which interferes with his work.
【单选题】He doesn’t like his job. He often ________ it.
A.
thinks over
B.
complains about
C.
looks after
D.
cares about
【单选题】His mother often complains__________the music he plays because it‘s too__________.
A.
of…aloud
B.
about…loudly
C.
of…10udly
D.
about…loud
【单选题】He never complains about the difficulties he has in life． ，he always has ways to overcome them．
A.
However
B.
Otherwise
C.
Instead
D.
Therefore
【单选题】In the sentence 'Often, the child becomes angry or complains when he does not get his way.' (Para.3), what does 'get his way' mean?
A.
Make himself understood.
B.
Gain what he wants.
C.
Have a friendly relationship with his parents.
D.
Find the way to his home.
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