题目内容
（请给出正确答案）
提问人：网友13***556
发布时间：2022年4月6日 07:16
[单项选择题]
The scourge that"s plaguing cruise lines—and causing thousands of tourists to rethink their holiday ...We can learn from the fourth paragraph that
A．students are easily attacked by the Norwalk-like virus.
B．Norwalk-like viruses tend to break out in closed crowded place.
C．Norwalk-like viruses might cause flu.
D．Norwalk-like viruses are not widespread.
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