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【简答题】
What do these companies think about customers? A. They don't care how many customers they have. B. They care about their customers' needs. C. They care how much the customers pay.
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【简答题】已知关于x的一元二次方程x 2 -ax+2a-3=0，求使方程有两个大于零的实数根的充要条件．
【单选题】農事詩中最為著名的（ ）一篇，敘述了西周農民一年的勞動過程和他們衣食住各方面的生活狀態，是研究西周社會階層、經濟、政治制度最有價值的農事詩。
A.
《豳風·七月》
B.
《周頌·臣工》
C.
《小雅·信南山》
D.
《周頌·噫嘻》
【单选题】．Play, often seen as ______ activity for kids, is still important in ____development of teenagers.
A.
the; the
B.
an; the
C.
an; 不填
D.
the; 不填
【单选题】—Do you still often go to the cinema? —Not as often as I ______.
A.
used to
B.
have to
C.
was
D.
do
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