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【多选题】
重量的表示方法有( )A.
毛重
B.
净重
C.
D.
理论重量
E.
法定重量
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【单选题】But if I lived on the border to Mexico, I would be able to speak English and Spanish, too.
A.
maybe
B.
always
C.
never
D.
certainly
【单选题】I would never speak to someone like that _____ they said something unpleasant to me. [ ]
A.
even if
B.
so that
C.
as if
D.
ever since
【单选题】Hardly_____when the parrot flew out and settled in the same tree as the cat.
A.
had Mary opened the cage
B.
Mary opened the cagethat
C.
did Mary open the cage
D.
Mary opened the cage when
【简答题】I'll never forget the teacher who showed me that learning a foreign language could be fun and rewarding. Were it not for him, I would not be able to speak English as well as I do now.
【单选题】I never thought anyone would speak ill of him to his face, _________?
A.
did I
B.
didn’t I
C.
would they
D.
wouldn’t they
【单选题】But if I lived on the border to Mexico , I would be able to speak English and Spanish, too . A. maybe B. always C . never D . certainly
A.
maybe
B.
always
C.
never
D.
certainly
【单选题】以下关于系统误差的叙述，正确的是（ ）。
A.
系统误差可通过多次测量取平均的方法减小。
B.
如何减少并消除系统误差有普遍通用的办法。
C.
校正仪器刻度、更换仪器设备、改进实验方法、提高药品纯度、修正计算公式等措施能减少系统误差。
D.
系统误差不能被完全修正。
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