[单选题]（ ）According to Professor Colin,which of the following is TRUE? 查看材料
AReducing radio waves is a hard task for scientists.
BChildren should not be allowed to use mobiles.
CScientists usually care for young children more than grown-ups.
DSending each other text messages is safer than regular calling.
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参考答案
试题答案：
D
答案解释：
D【解析】通过最后一段最后一句“He suggested?that children should be encouraged to use text?messages rather than spoken conversations…”．可确定D项正确。A项和C项文章中并未提及，而B项则犯了理解过度的错误。
