问题 判断题

判断下列说法的对错,对的打“√”,错的打“×”。

1.《我的伯父鲁迅先生》一文中,末尾“的确,伯父就是这样的一个人,他为自己想得少,为别人想得多”这句话起到了总结全文的作用。(  )

2.《一面》讲述的是“我”与鲁迅事先相约在上海内山书店相见的一面,这“一面”给“我”留下了深刻的印象。(  )

3.“我卖给你,两本,一块钱。”这里的两本书都是鲁迅先生翻译的书,它们分别是《毁灭》和《铁流》。(  )

4.“而且知道他和我仿佛年纪”,这句中的“仿佛”是指闰土和“我”年纪差不多大。(  )

5.“有的人活着,他已经死了;有的人死了,他还活着。”这个句子中两个“活”字的意思是一样的。(  )

答案

1.√

2.×

3.×

4.√

5.×

实验题

现用质量分数为98%、密度为1.84g•cm-3的浓H2SO4来配制500mL、0.2mol•L-1的稀H2S04。可供选择的仪器有:①玻璃棒②烧瓶③烧杯④胶头滴管⑤量筒⑥容量瓶⑦托盘天平⑧药匙。请回答下列问题:

(1)上述仪器中,在配制稀H2S04时用不到的有_________ (填代号)。

(2)经计算,需浓H2S04的体积为______。现有①10mL②50mL③100mL三种 规格的量筒,你选用的量筒是______ (填代号)。

(3)将浓H2S04加适量蒸馏水稀释后,冷却片刻,随后全部转移到_______mL的容量瓶中,转移时应用玻璃棒_________ 。转移完毕,用少量蒸馏水洗涤____________ 2—3次,并将洗涤液全部转移到容量瓶中,再加适量蒸馏水,振荡容量瓶,使溶液混合均匀。然后缓缓地把蒸馏水直接注入容量瓶直到液面接近刻度________ 处。改用______________  加蒸馏水到瓶颈刻度的地方,使溶液的________________________________________ 。 振荡、摇匀后,装瓶、贴签。

(4)在配制过程中,其他操作都准确,下列操作中错误的是______  (填代号,下同)  ,能引起误差偏高的有_________。

①洗涤量取浓H2S04后的量筒,并将洗涤液转移到容量瓶中

②未等稀释后的H2S04溶液冷却至室温就转移到容量瓶中

③将浓H2S04直接倒人烧杯,再向烧杯中注入蒸馏水来稀释浓H2S04

④定容时,加蒸馏水超过标线,又用胶头滴管吸出

⑤转移前,容量瓶中含有少量蒸馏水

⑥定容摇匀后,发现液面低于标线,又用胶头滴管加蒸馏水至标线

⑦定容时,俯视标线

阅读理解

Five years ago, David Smith wore an expensive suit to work every day. “I was a clothes addict,” he jokes. “I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled.” Today David wears casual clothes-khaki pants and sports shirt-to the office. He hardly ever wears a necktie. “I’m working harder than ever,” David says, “and I need to feel comfortable.”

More and more companies are allowing their office workers to wear casual clothes to work in the United States. The change from formal to casual office wear has been gradual. In the early 1990s, many companies allowed their employees to wear casual clothes on Friday(but only on Friday). This became known as “dress-down Friday” of “casual Friday”. “What started out as an extra one-day-a-week benefit for employees has really become an everyday thing.” said business consultant Maisly Jones.

Why have so many companies started allowing their employees to wear casual clothes? One reason is that it’s easier for a company to attract new employees if it has a casual dress code. “A lot of young people don’t want to dress up for work,” says the owner of a software company, “so it’s hard to hire people if you have a conservative dress code.” Another reason is that people seem happier and more productive when they are wearing comfortable clothes. In a study conducted by Levi Strauss and Company, 85 percent of employers said that they believe that casual dress improves employee morale. Only 4 percent of employers said that casual dress has a negative impact on productivity. Supporters of casual office wear also argue that a casual dress code helps them save money. “Suits are expensive, if you have to wear one every day,” one person said. “For the same amount of money, you can buy a lot more casual clothes.”

小题1:David Smith refers to himself as having been “a clothes addict,” because _______.

A.he often wore khaki pants and a sports shirt

B.he couldn’t stand a clean appearance

C.he wanted his clothes to look neat all the time

D.he didn’t want to spend much money on clothes小题2:David Smith wears casual clothes now, because _______.

A.they make him feel at ease when working

B.he cannot afford to buy expensive clothes

C.he looks handsome in casual clothes

D.he no longer works for any company小题3: According to this passage, which of the following statements is false?

A.Many employees don’t like a conservative dress code.

B.Comfortable clothes make employees more productive.

C.A casual clothes code is welcomed by young employees.

D.All the employers in the U. S. are for casual office wear.小题4: According to this passage, which of the following statements is true?

A.Company workers started to dress down about twenty years ago.

B.Dress-down has become an everyday phenomenon since the early 1990s.

C.“Dress-down Friday” was first given as a favor from employers.

D.Many workers want to wear casual clothes to impress people.小题5:In this passage, the following advantages of casual office wear are mentioned in the passage except _______.

A.saving employees’ money

B.making employees more attractive

C.improving employees’ motivation

D.making employees happier