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【单选题】
α-螺旋是蛋白质二级结构的一种类型,也称3.6 13 螺旋,其中的数字13表示A.
螺距13Å
B.
螺旋直径13Å
C.
13个氨基酸/螺圈
D.
13个原子/氢键环上
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举一反三
【单选题】Most smokers are well __________ of the dangers of smoking to their health.
A.
known
B.
conscious
C.
aware
D.
seen
【简答题】The old man realized that too much salt was harmful to health. ( 改为否定句 ) The old man ______ ______ that too much salt was harmful to health.
【单选题】Smokers are well ________________the dangers to their own health.
A.
aware
B.
awareness
C.
aware of
D.
awared of
【单选题】Smokers are well aware ________the dangers to their own health.
A.
in
B.
to
C.
as
D.
of
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