问题 选择题

下列说法正确的是(   )

A.煤炉上放一壶水就能防止一氧化碳中毒

B.化学反应在生成新物质的同时,还伴随着能量的变化

C.发现燃气(天然气或液化石油气等)泄漏,应点火检查泄漏处

D.扑灭电器、图书、档案等火灾,最适宜的灭火器是泡沫灭火器

答案

答案:B

题目分析:一氧化碳难溶于水,A错误;化学反应在生成新物质的同时,还伴随着能量的变化,如吸热和放热,B正确;燃气(天然气或液化石油气等)泄漏,点火检查会爆炸,应关闭阀门,打开门窗,C错误;用泡沫灭火器会损坏图书,D错误。故选B。

阅读理解

Haikou: A shark was killed after being dragged to shore at Yalong Berth beach in Sanya, South China’s Hainan Province, on Sunday afternoon.

It was the first time a shark had been caught in the beach area, a popular tourist site in Hainan.

Local fishermen said they caught the 3-meter-long, l-ton shark by chance When they were fishing in sea water 1,000 metres deep near the beach.

Police temporarily(暂时)protected the shark while oceanographers decided whether it was a species belonging to State protection.

Fishermen later killed and sold the shark after oceanographers confirmed that it was a whale shark and therefore not under State protection.

The shark was believed to have drifted into the area from the deep sea due to strong waves caused last week by Typhoon Imbudo. It had no open injuries but experts said they believed it suffered from internal(内部的)bleeding.

Local police officer Fu Chenggeng said beachgoers should not feel threatened by sharks because the fish never attack human beings on their own initiative. Fu said he had never heard of any shark attacks at the Sanya beach since he first started work there eight years ago.

However, police said they will improve the security system to safeguard tourists’ safety on the beach.

1.A possible title of the article should be      .

A.Tourists in Danger              B.Killing Whale Shark

C.Shark Caught in Beach Area      D.Whale Shark in Danger

2.From the article it can be learned      .

A.the shark was caught because of obvious injuries 

B.the number of the whale shark may be small

C.typhoon Imbudo may have brought the shark to the area

D.it’s not unusual to see a shark on the beach

3.The underlined word “confirmed” probably means      .

A.said      B.believed       C.thought        D.made sure

判断题