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【判断题】
甜菜块根在不良的环境条件下会出现分叉、空心、多头等畸形块根，块根形状有遗传性，在培育新品种和种子繁育时应注意选。A.
正确
B.
错误
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【简答题】已知一开环控制数控车床伺服系统的步进电动机转子齿数为50，采用四相双四拍的通电控制方式，工作台运动的脉冲当量为0.005mm，机械系统的滚珠丝杠导程为6mm，则该机械系统减速器的总传动比为（ ）。
【单选题】My headache _________ me．I thought it was going away, but it’s getting worse and worse．
A.
killed
B.
kills
C.
is killing
D.
was killing
【单选题】My headache _____ me．I thought it was going away, but it is getting worse and worse．
A.
kills
B.
is killing
C.
was killing
D.
killed
【简答题】已知一开环控制数控车床伺服系统的步进电动机转子齿数为60，采用四相双四拍的通电控制方式，工作台运动的脉冲当量为0.005mm，机械系统的滚珠丝杠导程为6mm，则该机械系统减速器的总传动比为（ ）。
【简答题】My headache is killing me. I ______ it was going away. But now it’s getting worse and worse. A．think B．thought C．have thought D．had thought
【单选题】听力原文：W: My headache is killing me. I thought it was going away. But now it is getting worse and worse. M: I told you yesterday to make an appointment. Q: What does the man mean? (16)
A.
The woman should confirm her appointment with the doctor.
B.
The woman should have seen the doctor earlier.
C.
The woman's headache will go away by itself.
D.
The woman has been complaining too much.
【单选题】My headache _____ me．I thought it was going away, but it’s getting worse and worse．
A.
kills
B.
is killing
C.
was killing
D.
killed
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