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【简答题】
定义一个“等积数列”：在一个数列中，如果每一项与它后一项的积都是同一常数，那么这个数列叫“等积数列”，这个常数叫做这个数列的．已知数列{a n }是等积数列，且a 1 =2，为5，则这个数列的前n项和S n 的计算公式为：______．
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【单选题】Retirement can be good for people who______.
A.
have always had very busy work lives
B.
can find more stimulating activities than they had through work
C.
have had high-level jobs or very stimulating work experiences
D.
have previously had unsatisfying work experiences
【单选题】Business people abroad who want to make connections with Chinese companies can take the first step using a new Internet site our firm established recently.
A.
contacts
B.
joints
C.
acquaintance
D.
linking
【单选题】People who can neither hear ______ speak talk to each other with the help of their fingers。
A.
or
B.
nor
C.
but
D.
and
【简答题】公关活动的业务方式有: __________ 公关, ___________ 公关, ______________ 公关, _____________ 公关和 ___________ 公关。
【单选题】Seldom can people find international news on the front page of this popular local newspaper．
A.
人们不会在这份地方报纸前几页上寻找重要的国际新闻。
B.
人们很难在当地这份深受欢迎的报纸头版看到国际新闻。
C.
人们从这份当地发行的报纸第一页上几乎找不到国际新闻。
D.
人们阅读当地放心的报刊时从不查看头版刊登的国际新闻。
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