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【单选题】
下面关于心室肌细胞Na+通道的描述,哪一项是错误的?A.
是电压依从性的
B.
激活和失活的速度都很快
C.
是形成快反应细胞动作电位0期的离子流
D.
选择性较强，只有Na+可以通过
E.
在去极化到－40mV时被激活
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举一反三
【单选题】Regular exercise is a good habit for kids to ___________.
A.
develop
B.
break
C.
become
D.
grow
【单选题】Adam Smith mentioned the number 4 800 in order to ______.
A.
show the advantages of the division of labor
B.
emphasize how powerful the individual worker was
C.
show the advantages of the old craft system
D.
emphasize the importance of increased production
【单选题】The professor suggested that the students ________ into four groups in the experiment. [ ]
A.
be divided
B.
must divided
C.
might divided
D.
should divided
【单选题】64-Unit 11 Activity 4.mp3: What was the main focus of the survey?
A.
Leisure sporting activities.
B.
Average age of athetes.
C.
Durability of sporting equipment.
相关题目：
【单选题】Regular exercise is a good habit for kids to ___________.
A.
develop
B.
break
C.
become
D.
grow