【单选题】【消耗次数：1】
Thereasoniswhyhefailedis_______hewastoocareless.
①
because
②
that
③
for
④
becauseof
参考答案：
复制
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相关题目
【单选题】
Everybody likes her because she is always _______ .
①
Everybody likes her because she is always _______ .
②
cheerful
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sad
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selfish
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They are living with their parents for the moment because their own house __________.
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is being rebuilt
②
has been rebuilt
③
is rebuilt
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has rebuilt
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____ of them knew about the plan because it was a secret.
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Some
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Any
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No one
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The electric fan does not work because of the ____ of service.
①
pause
②
break
③
interruption
④
breakdown
【单选题】
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①
pause
②
break
③
interruption
④
breakdown
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You can take as many as you like because they are free of ____ .?
①
fare ?
②
charge ?
③
money ?
④
pay?
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I am unhappy because she accepted my invitation _______ .
①
passively
②
extremely
③
undoubtedly
④
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I won’t be able to attend the meeting tonight because _________ .
①
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②
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③
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④
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This machine is extremely （ ） because it runs on half-price electricity.
①
economic
②
economical
③
economy
④
economist
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随机题目
【单选题】
下列关于中心静脉压的叙述，错误的是
①
是指胸腔大静脉和右心房的血压
②
心脏射血能力减弱时，中心静脉压较低
③
正常值约为4~12cmH2O(1mmH2O=9.80665Pa)
④
是反映心脏功能的一项指标
⑤
静脉输液大且过快时，中心静脉压升高
【单选题】
关于抑制性突触后电位的产生，正确的叙述是
①
突触前轴突末梢超极化
②
突触后膜对Ca2+、K+通透性增大
③
突触后膜去极化
④
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⑤
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①
H+难以通过血脑屏障
②
H+对中枢化学感受器有抑制作用
③
中枢化学感受器对H+不敏感
④
脑脊液对H+浓度的缓冲
⑤
以上都不对