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Scientists are still trying to determine how harmful microplastics are—but what they do know has raised concerns. The new study suggests boiling tap water could be a tool to limit intake.“The way they demonstrated how microplastics were trapped through the boiling process was nice,” Caroline Gauchotte-Lindsay, an environmental engineer of the University of Glasgow in Scotland who was not involved in the research, tells New Scientist.“We should be looking into upgrading drinking water treatment plants so they remove microplastics.”
12. How does the author present the issue in the first paragraph?
A. By quotationg an expert. B. By defining a concept.
C. By giving examples. D. By providing statistics.
13. What determines the effectiveness of trapping microplastics in water?
A. The hardness of water. B. The length of cooling time.
C. The frequency of filtering. D. The type of plastic in water.
14. What does the author try to illustrate by mentioning bottled water in paragraph 4?
A. The importance of plastic recycling. B. The severity of the microplastic problem.
C. The danger in overusing pure water. D. The difficulty in treating polluted water.

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