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【单选题】
心脏兴奋由窦房结传导至房室结,表现在心电图上的相应部分是A.
P 波
B.
PR 段
C.
QT 段
D.
ST 段
E.
QRS 波
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举一反三
【单选题】______by the news of his father's death, he could hardly utter a word.
A.
To be stunned
B.
Stunned
C.
To stun
D.
Stunning
【单选题】---My son hardly ever eat vegetables ____ it’s good for his health. ---That is not a good habit.
A.
and
B.
but
C.
although
D.
through
【单选题】Hardly (did he hear) his mother's (calling) (when) he realized that it (was already dark).
A.
did he hear
B.
calling
C.
when
D.
was already dark
【单选题】The workers could hardly the boss’s bad temper but under his supervision they had to themselves to working harder.
A.
tolerate; contribute
B.
bear; dedicate
C.
stand; resign
D.
put up with; invest
【单选题】It’s clear that ________ little money he earns can hardly support his family.
A.
a
B.
an
C.
the
D.
/
【简答题】雄黄的主要成分是 查看材料
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