有关浓硫酸的说法,错误的是 A.浓硫酸具有吸水性,在实验室中常用作干燥剂 B.浓

题型:选择题

问题:

有关浓硫酸的说法,错误的是

A.浓硫酸具有吸水性,在实验室中常用作干燥剂

B.浓硫酸具有强腐蚀性,它能使纸张、布料、皮肤等脱水碳化

C.能硫酸溶于水时会吸收大量的热,可作制冷剂

D.如果不慎将张硫酸沾到皮肤或衣服上,应立即用大量水冲洗,然后涂3%~5%的碳酸氢钠溶液

考点:测容器—量筒称量器—天平加热器皿—酒精灯常见仪器和装置的用途
题型:选择题

— _____________ you often draw pictures?

— No, I _____________. [ ]

A. Do, don't

B. Does, doesn't

C. Do, doesn't

题型:选择题

For a small town, Manhattan, Kansas has some big surprises. And one of them is the Holiday Inn Hotel, with rooms built around a swimming pool and a friendly family atmosphere.

The Holiday Inn is where Manhattan people often go for a special party, or a night out. A lot of them choose to eat in the brightly lighted restaurant near the pool. And many of them will be served by Ellen Logan, who has worked as a waitress here for more than two years.

Ellen, like most of the waitresses, is also a student. She comes from Nebraska, but she’s planning one day to be a veterinary surgeon, and to care for small animals. But in order to support herself at college, she works twenty hours a week at the Holiday Inn.

Ellen soon learned what every waitress finds out. Your best friend has a good pair of shoes. She paid forty -five dollars for hers, much more than she would usually spend. She’s discovered something else too. You don’t have to know much about food to be a good waitress, but you do have to know a lot about people.

“A lot of business people always stay here when they come to Manhattan,” she explains. “They like you to recognize them and remember their favorite dishes. But some couples come for a night out together. They just want to be left alone. Then there are people who can’t make up their minds. They look down the menu and say‘What do you suggest?’So I ask them how hungry they are. If they say, ‘Not very’, I suggest the salad bar, with soup, salad, bread, and a fruit plate. But if they say they’re very hungry, I suggest a Kansas Strip Steak, with potatoes or rice. You get salad and bread as well. It’s very nice. Real good value.”

Ellen may get tired feet sometimes, but at least she’s learning too much about people. She’ll probably make a good animal doctor, but if she find she doesn’t like it after all, she can always become a psychiatrist(心理医生)instead.

小题1:A good title for this passage is______________.

A.Ellen Logan at the Holiday Inn

B.American Holiday Inn

C.A Special Holiday Inn Hotel in Manhattan

D.How to Deal with People小题2:The word “a veterinary surgeon” probably means____________.

A.an animal doctor.

B.an animal trainer

C.a hotel manager

D.a food expert小题3:From the passage we can infer that_______________.

A.waitresses in the Holiday Inn are all students

B.waitresses are required to buy a good pair of shoes before they go to work

C.waitresses should be familiar with the food there

D.it is more important for the waitresses to know much about people than food小题4: According to the passage, which of the following statements is NOT true?

A.The Holiday Inn hotel is one of the big surprises in Manhattan.

B.Businessmen like to be recognized by the people and suggested what to eat.

C.Some couples prefer to be left alone without being bothered too much.

D.One of the reasons why people like to eat in the hotel is that it is full of a friendly atmosphere.

题型:选择题

某些阻燃剂在燃烧过程中吸收大量热量,使燃烧温度难以上升,从而产生阻燃效果.如硼砂阻燃剂(Na2B4O7•10H2O)在燃烧受热时,要释放出10个结晶水,同时每382g硼砂要吸收142kJ的热量.反应方程式为:Na2B4O7•10H2O

  △  
.
 
Na2B4O7+10H2O,则下列说法正确的是(  )

A.Na2B4O7•10H2O的阻燃反应是放热反应

B.Na2B4O7•10H2O不是化合物

C.Na2B4O7•10H2O中硼元素(B)的化合价为+3

D.Na2B4O7•10H2O可以燃烧

题型:选择题

旧货经营单位销售旧货,应计算缴纳增值税时依照()。

题型:选择题

目前,Word已经成为了()处理软件中最受欢迎的应用软件。

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