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【单选题】
第一心音产生的主要原因是A.
心室肌收缩
B.
房室瓣关闭
C.
动脉瓣开放
D.
动脉瓣关闭
E.
房室瓣开放
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举一反三
【单选题】If you accidentally drop your fork on the floor in a restaurant, you will ______.
A.
pick it up, wipe it off, and use it.
B.
leave it on the floor and ask the server to bring you another one.
C.
pick it up, give it to the server, and ask him/her to bring you another one.
D.
leave it on the floor and use your neighbor’s fork when he is not looking.
【简答题】Suppose you are riding on a hot air balloon, carrying a buzzerthat emits a sound of frequency f . If you accidentally drop the buzzer over the side while the balloon is rising at constant speed, the f...
【简答题】What should you do if you accidentally touch the front of your mask while wearing it?
【单选题】If someone accidentally steps on your toe, it hurts. But does it hurt more if you think he did it deliberately? That, in essence, is the question Kurt Gray and Daniel Wegner of Harvard University aske...
A.
To study whether the deliberate hurt hurts more.
B.
To let people know deliberately hurting people is evil.
C.
To study the phenomenon of stepping on people.
D.
To offer students academic credits.
【判断题】If you accidentally utter a phrase that pulls someone’s trigger and causes them to have a strong emotional reaction, your best response is to let them finish their emotional outburst without interrupt...
A.
正确
B.
错误
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