Parents have become increasingly concerned about the television viewing habits of their children.

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问题 Parents have become increasingly concerned about the television viewing habits of their children.

选项 A、interested in
B、worried about
C、disappointed with
D、indifferent to

答案B

解析 interested in:对……感兴趣;,worried about:对……担忧;disappointed with:对……失望;indifferent to:对……漠不关心。题中concerned about意为“对……担忧”,故可知B选项是正确的。
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