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【单选题】
I accept that the romance may have gone out of the marriage, but surely this is true _______ many couples.A.
to
B.
among
C.
on
D.
of
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【单选题】硝酸甘油抗心绞痛的机制主要是
A.
选择性扩张冠脉，增加心肌供血
B.
阻断β受体，降低心肌耗氧量
C.
减慢心率，降低心肌耗氧量
D.
扩张动脉和静脉，降低耗氧量
E.
扩张冠状动脉和侧支血管，改善局部缺血
F.
抑制心肌收缩力，降低心肌耗氧量
【单选题】硝酸甘油抗心绞痛的机制主要是
A.
选择性扩张冠状动脉,增加心肌供血
B.
阻断β受体，降低心肌耗氧量
C.
减慢心率，降低心肌耗氧量
D.
扩张动脉和静脉，降低耗氧量;扩张冠状动脉和侧支血管,改善局部缺血
E.
抑制心肌收缩力，降低心肌耗氧量
【单选题】Some students often go to class late or not at all. They want to “enjoy life” and muddle through the four years at college. These examples of the abuse of independence are an indication that these stu...
A.
childhood
B.
adolescence
C.
hood
D.
youth
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