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【单选题】
以下哪个不是马丁选择发展电动汽车的原因A.
石油资源限制
B.
电动汽车关键技术成熟
C.
电动汽车成本低
D.
电动汽车20年内可超过传统汽车技术并可持续发展
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反馈参考答案：
举一反三
【单选题】—How many computers are there in your computer room? —__________. [ ]
A.
Yes, I do.
B.
No, it isn't.
C.
Twenty-five.
【单选题】Which of the following is NOT an advantage of a well-spaced set of twenty to twenty four teeth ?
A.
These teeth would work harder and become healthier.
B.
Decay of teeth could not develop.
C.
We would eat the diet of our ancestors.
D.
Teeth can be extracted easily during childhood.
【单选题】They ______each other for more than twenty years.
A.
don't see
B.
didn't see
C.
haven't seen
D.
hadn't seen
【单选题】对于同一资料，如果t r ＞t 0.05,v ,则有( )
A.
t b ＞t 0.05,v
B.
t b =t 0.05,v
C.
t b ＜t 0.05,v
D.
t b ＞t 0.05,v 或t r ＜t 0.05,v
E.
以上答案均不对
【单选题】The fish are usually longer than twenty centimetres.
A.
Right
B.
Wrong
C.
Doesn't say
【单选题】Her shoes _____ twenty dollars and his T-shirt _____ also twenty dollars. [ ]
A.
are;are
B.
are;is
C.
is; are
D.
be; is
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