专项活动或节日布置的装饰物和广告应在活动结束后几天内拆除（）
A.3天
B.7天
C.10天
D.15天
参考答案：B
连词成句 。
1. party, birthday, a, for, we, him, have (.)
2. do, have, when, contest, English, you, an (?)
3. month, year. the, the, of, third, March, is (.)
4. have, do, an, art. they, festival (?)
5. is, day, women's, eighth, March(.)
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市场中的所有投资者都可以分为多方和空方两种。( )
