It is very hot this summer. A cool watermelon is really a wonderful choice for hot summer. But recently, there is some bad news about watermelons. A family of three in Xi’an, Shaanxi province, ate watermelon placed overnight in the fridge and had gastroenteritis(肠胃炎). The news made people scared and worried.

Is it secure to eat refrigerated watermelon? People are worrying about that these days. According to a study on bacteria(细菌) formed in watermelon overnight, the researchers cut the watermelon with clean fruit knives and household knives. After that, the watermelon was wrapped(包) in cling film(保鲜膜) and placed in the fridge for 24 hours.

The results showed that watermelons cut with clean fruit knives had only 45 bacteria per(每) 25g, while watermelons cut with household knives had 8400 bacteria per 25g. This study told us that watermelons cut with clean knives will not make watermelons dangerous when stored in the fridge.   

Here are some ways to keep us healthy when eating watermelons.

❶ For whole watermelons, run cold water over watermelon before eating.

❷ Cut watermelons with clean knives.

❸Don’t let watermelon pieces sit out at room temperature for longer than three hours.

❹ For cut watermelons, wrap them in cling film and put them in the fridge.

❺ Finish eating watermelons in the fridge in 24 hours. The sooner you eat it, the better!

❻ Clean your fridge often, at least once a month. It is safer for you and your family.

本时文内容由奇速英语国际教育研究院原创编写，未经书面授权，禁止复制和任何商业用途，版权所有，侵权必究！（作者投稿及时文阅读定制请联系微信：18980471698）

1.How did people feel after knowing the news?

A Afraid and nervous.

B Happy and comfortable.

C Excited and satisfied.

D Sad and tired.

解析：选A。A细节理解题。根据第一段最后一句“The news made people scared and worried.”可知，西安一家三口吃隔夜西瓜患胃肠炎的新闻让人们感到担忧和害怕。故选A。

2.What does the underlined word “secure” in Paragraph 2 mean?

A Expensive.

B Safe.

C Creative.

D Educational.

解析：选B。B词义猜测题。根据前面提到的一家三口吃隔夜西瓜患胃肠炎的新闻以及后面的“People are worrying about that these days.”可知，人们在担心冰西瓜怎么吃才安全这一问题。故选B。

3.What is Paragraph 3 mainly about?

A The importance of clean knives.

B The results of the study.

C The ways to do a study.

D The ways to cut watermelons.

解析：选B。B段落大意题。该段主要讲了研究人员分别用普通家用菜刀和专用水果刀分别切西瓜，封上保鲜膜隔夜保存后检测西瓜上的细菌数量，得到了差异巨大的数据。即该段主要讲述了研究的结果。故选B。

4.Which is not the writer’s advice?

A Use clean knives to cut watermelons.

B Wash the whole watermelons with cold water.

C Finish eating watermelons in the fridge in a day.

D Don’t use cling film to wrap watermelons.

解析：选D。D细节理解题。根据文中建议的第❹点“For cut watermelons, wrap them in cling film and put them in the fridge.”可知，作者建议给切开的西瓜包上保鲜膜，并及时放冰箱。故选D。

5.In which part of a newspaper can we read the passage?

A Science & Technology.

B Education & Sports.

C Food & Health.

D People & History.

解析：选C。C推理判断题。通读全文可知，本文讨论了隔夜冰西瓜能不能吃这一问题，这一问题涉及到人们的健康，故可以在“食品与健康”版块读到。故选C。