摘要：第一节 单项选择(共15小题,每小题1分.满分15分) 从A.B.C.D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该题涂黑.21. China, a country with 145 million elderly people, will remain ageing society during this century, according to Chinese population experts. A. /; the B. an; / C. an; the D. the; /
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第一节 单项选择(共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
Customers will receive a free CD as a _________ with any order over 200 yuan in this store.
A．payment B．bonus
C．cash D．benefit
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第一节单项选择(共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
Customers will receive a free CD as a _________ with any order over 200 yuan in this store.
A．payment B．bonus
C．cash D．benefit
第一节 单项选择（共15小题；每小题1分，满分15分）
请认真阅读下面各题，从题中所给的A、B、C、D、四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
例: It is generally considered unwise to give a child ________ he or she wants.
A. however B. whatever C. whichever D. whenever
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