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【简答题】
HIV病毒主要攻击人体的 细胞，从而使人体的免疫力下降。
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【简答题】Advertising: the importance of using celebrities to endorse products
【单选题】The media and the public can be forgiven for taking an interest in celebrities’ private lives if_____________.
A.
celebrities play a fantasy role in a movie or a television show
B.
celebrities make their living from their performances
C.
celebrities don’t attempt to gain extra publicity when off the stage
D.
celebrities deliberately merge their on-screen and off-screen personalities