问题 选择题

将过量的铁粉放入AgNO3和Zn(NO32,的混合溶液中,充分反应后过滤,留在滤纸上的固体物质是(  )

A.Zn

B.Ag

C.Zn和Ag

D.Ag和Fe

答案

过量的铁粉放入AgNO3和Zn(NO32的混合溶液中,故一定会有铁剩余;由金属活动性顺序可知,三种金属的活动性顺序为:锌>铁>银,铁能与硝酸银反应生成银,故一定会有银,铁不能与硝酸锌反应,故一定不会有锌,所以,留在滤纸上的固体物质是银和铁,D正确,A、B、C错误.

故选D.

阅读理解

Food or friends? Lip salve (润唇膏) or iPod? What is the most important thing in the US teenagers’ lives today? Let’s take a look.

Some find that they can’t do without people.

“My biggest need is my friends. Without them, I wouldn’t do much,” said Adrian Fernandez, a 14-year-old boy.

With others, food always comes first.

“I do not think that I could live without chili con carne (辣子肉丁). I eat it every day. And if I didn’t have it, it’s all I would think about,” said Max Wu, an 8th-grade boy.

Sometimes, the things teenagers can’t do without are strange.

Take 14-year-old girl Hannah Sacchini for example. “I cannot live without lip salve, especially in winter,” said Hannah Sacchini. “I go mad if my lips get dry.”

Of course, today everybody uses mobile phones and computers. Some teens can’t live without these high-tech (高科技的) things.

Justin Beck, a 15-year-old boy, feels like this: “I would not be able to live without my iPod. I use it for so many different things. I always have it with me,” he said.

So, now we know the things US kids really must have. What about you and your classmates? What can’t you live without?

根据短文内容,选择最佳选项。 (10分)

小题1:To Adrian Fernandez,     is the most important.

A.a friend

B.lip salve

C.a computer

D.chili con carne小题2:How often does Max Wu eat chili con carne?

A.Once a week.

B.Every day.

C.Twice a day.

D.Three times a week.小题3:Hannah Sacchini will become     if her lips get dry.

A.fat

B.excited

C.shy

D.annoyed小题4:We can learn that Justin Beck     takes his iPod to school.

A.never

B.sometimes

C.always

D.hardly ever小题5:The passage mainly tells us    .

A.what things the US kids really must have

B.what the US teenagers do every day at school

C.what the most important food in the US teenagers’ lives is

D.how the US teenagers’ lives are every day at school

判断题