The little Water Drop _____________ so high. [ ]
A. come up
B. comes up
C. coming up
答案:B
—I think it’s going to be a11 argument.
—Yes. it could be.
—I wonder we can do about it.
A.what
B.how
C.when
D.whether
多石土壤的电阻率参考值为()。
A.100Ω·m
B.200Ω·m
C.300Ω·m
D.400Ω·m