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【单选题】
甲乙两人分别从随机数字表中抽得30个(各取两位数字)随机数字作为两个样本,求得 , 和 ,,则理论上认为( ) 。A.
，
B.
作两样本均数的 检验，必然得出无差别的结论
C.
作两方差的 检验，必然方差齐
D.
分别由甲、样本求出的总体均数的95%可信区间，很可能有重叠。
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【单选题】It is over _________ from Huaibei to Hefei.
A.
four hour’s drive
B.
four hours’ drives
C.
four hours’ drive
D.
four hour’s drives
【单选题】听力原文：W: I have to go to the other side of the town, but it's the rush hour now. M: Driving is not the ideal way. I always take the subway at this time of the day. Q: According to the man, what is the ...
A.
Driving a car.
B.
Taking a taxi.
C.
Taking a train.
D.
Going by subway.
【简答题】以下食物中含锌量最高的是
【简答题】外资股是指股份公司向外国投资者发行的股票，不包括向我国、、地区发行的股票。（ ） A．正确 B．错误
【单选题】听力原文：W: I have to go to the other side of the town, but it's the rush hour now. M: Driving is not the ideal way. I always take the subway at this time of the day. Q: According to the man, what is the ...
A.
Driving a car.
B.
Taking a taxi.
C.
Taking a train.
D.
Going by subway.
【单选题】It's better to avoid ______ downtown during the rush hour.
A.
to drive
B.
driving
C.
having driven
D.
to be driving
【单选题】听力原文：W: I have to go to the other side of the town, but it's the rush hour now. M: Driving is not the ideal way. I always take the subway at this time of the day. Q: According to the man, what is the ...
A.
Driving a car.
B.
Taking a taxi.
C.
Going by train.
D.
Taking the subway.
【简答题】外资股是指股份公司向外国投资者发行的股票，不包括向我国、、地区发行的股票。
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