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【单选题】
化妆品的二级污染是指( )A.
化妆品的原材料受污染而导致的污染
B.
化妆品在生产过程中导致的污染
C.
生产容器的污染
D.
化妆品启封后，在使用存放过程中受污染
E.
产品运输过程中的污染
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举一反三
【单选题】which of the following statements is implied in Paragraph 1?
A.
Clifford was good at playing the saxophone.
B.
The author's friend was once a street musician.
C.
The 12-year-old girl played the trumpet very poorly.
D.
Clifford was a good music teacher.
【简答题】听下面一段材料，回答第1-4题。 1. What do we know about Clifford’s last picnic ? A. He was wet all over because of the rain . B. He had a good time with his friends . C. He stayed home in case it would rain . 2. Wh...
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