问题 选择题

下列实验结论正确的是  

[ ]

A.将饱和氯水滴到淀粉碘化钾试纸上出现如上图所示现象,说明氯水能将I-氧化成I2,还能将I2进一步氧化成碘的化合物

B.将过量CO2通入Ca(ClO)2溶液中,最后得到澄清溶液,说明H2CO3的酸性比HClO弱

C.向某溶液中加入新制Cu(OH)2,加热,出现红色沉淀,说明该溶液中一定含醛类物质

D.向苯酚溶液中滴加少量稀溴水,溶液中没有沉淀生成,说明溶液中二者不能发生反应

答案

答案:A

单项选择题
单项选择题

完形填空:下面的短文有l5处空白,请根据短文内容为每处空白确定l个最佳选项。

Obesity(肥胖) Causes Global Warming.

The list of ills attributable to obesity keeps growing: Last week, obese people were accused of causing global warming.

This ______(51)comes from Sheldon Jacobson of the University of Illinois, US, and a doctoral student, Laura McLay. Their study ______(52) how much extra gasoline is needed to haul fat Americans around. The answer, they say, is a billion gallons of gas per year. ______(53)

There has been ______(54) for taxes on junk food in recent years. US economist Martin Schmidt suggests a tax on fast food ______(55)to people’s cars. "We tax cigarettes partly because of their health cost," Schmidt said. "Similarly, leading a lazy life style will end ______(56) costing taxpayers more."

US political scientist Eric Oliver said his first instinct was to laugh at these gas and fast food arguments. But such ______(57) are getting attention.

At the US Obesity Society's annual meeting, one person ______(58) obesity with car accident deaths, and another correlated obesity with suicides. No one asked whether there was really a cause-and-effect relationship. " The funny thing was that everyone took it ______(59)." Oliver said.

In a 1960s study, children were ______(60) drawings of children with disabilities and without them, and a drawing of an obese child. They were asked ______(61) they would want for a friend? The obese child was picked last.Three researchers recently repeated the study ______(62) college students. Once again, ______(63) no one, not even obese people, liked the obese person. " Obesity was stigmatized." the researchers said.

But, researchers say, getting______ (64) is not like quitting smoking. People struggle to stop smoking, and, in the end, many succeed. Obesity is different. Science has shown that they have limited personal control over their weight Genes also______ (65) a part.

59.(单项选择题)      

A.seriously

B.well

C.hard

D.greatly