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【单选题】
心室期前收缩之后出现代偿间歇的原因是 ( )A.
房室延搁时间延长
B.
结的节律性兴奋少发放一次
C.
心室兴奋的有效不特别长
D.
来自结的兴奋传导速度大大减慢
E.
结传出的兴奋落在期前兴奋的有效不应期内
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【单选题】— _______ wonderful dictionary it is! Thank you for buying me such a useful present. —I'm glad you like it. [ ]
A.
What a
B.
What
C.
How a
D.
How
【单选题】Nelson Mandela opened a black law firm in order to ____.
A.
make money
B.
help the poor black people with their problems
C.
make himself famous
D.
study law
【单选题】In 1965, a new Voting Rights Bill became law, ________all black people had the right to vote from then on.
A.
by which
B.
that
C.
by what
D.
which
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【单选题】以下涉及我国公民基本道德规范的说法错误的是()
A.
规范公共场合的的道德行为是“明礼”的要求
B.
规范公共关系中的道德行为是“诚信”的要求
C.
规范公民与公民之间的道德关系是“敬业”的要求
D.
规范公民与社会的道德关系是“奉献”的要求
【单选题】Mr. Black, ＿＿＿＿＿ born in Kentucky, lived and practiced law in Missouri.
A.
was
B.
he was
C.
although
D.
who he was
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