“a≥5且b≥3”的否定是______;“a≥5或b≤3”的否定是______.

题型:解答题

问题:

“a≥5且b≥3”的否定是______;“a≥5或b≤3”的否定是______.

考点:全称量词与存在性量词
题型:解答题

以下说法不正确的是()

A.内在美就是心灵美

B.内在美是精神、性格、道德、学识等的具体体现

C.内在美是美的本质

D.内在美包括行为美、语言美

题型:解答题

In ______________ I put on my mittens. [ ]

A. fall

B. winter

C. spring

D. summer

题型:解答题

第49—50 题为套题:李某是N 寿险公司的业务代理人,2010 年6 月,李某的佣金收入是4000 元。假设N 寿险公司所在地税务局规定营业税起征点为月3000 元,营业税税率为5%,城市维护建设税税率为7%,教育费附加比率为3%。

2010 年6 月,李某应缴纳的城市维护建设税和教育费附加合计为( )元。

A.400

B.100

C.5

D.20

题型:解答题

阅读理解。

     This is a time of year when we think about giving and receiving presents. Can you find a little extra

to give? On this page we suggest a few organizations you might like to help.

     Littleton Children's Home

     We DON'T want your money, but children's toys, books and clothes IN GOOD CONDITION

would be very welcome.

     Also, we are looking for friendly families who would take our children into their homes for a few

hours or days as guests. You have so much?will you share it?

Phone Sister Thomas on 55671

     Children's Hospice

     We look after a small number of very sick children. This important work needs skill and love. We

cannot continue without gifts or money to pay for more nursing staff. We also need storybooks and

toys suitable for quiet games.

     Please contact the Secretary, Little Children's Hospice, Newby Road.

     Street Food

     In the winter weather, it's no fun being homeless. It's even worse if you're hungry. We give hot food

to at least fifty people every night. It's hard work, but necessary. Can you come and help? If not, can

you offer a little money? We use a very old kitchen, and we need some new saucepans(平底锅). Money

for new ones would be most welcome indeed.

     Contact Street Food, c/o Mary's House, Elming Way. Littleton Phone 27713

     Littleton Youth Club

     Have you got an unwanted chair??a record-player??a pot of paint ? Because we can use them!

     We want to get to work on our meeting room!

     Please phone 66231 and we'll be happy to collect anything you can give us.

     Thank you!

     The Night Shelter

     We offer a warm bed for the night to anyone who has nowhere to go. We rent the former

Commercial Hotel on Green Street. Although it is not expensive, we never seem to have quite enough

money. Can you let us have a few pounds? Any amount, however small, will be such a help.

     Send it to us at 15, Green St, Littleton. Please make check payable to Night Shelter.

1. What kind of people are these organizations designed for?

A. Homeless and sick children

B. Less fortunate members of our society

C. Hungry people who have no beds to sleep in

D. Friendly members of our society to help others

2. If you like children and you could offer a happy family to a homeless child, you may contact _____.

A. Street Food      

B. The Night Shelter  

C. Littleton Children's Home      

D. Children's Hospice

3. What can be concluded from the passage?

A. There are too many social problems in this society.

B. People are very poor during the time of giving.

C. To offer help is just an excuse for these organizations to collect money.

D. There are many organizations trying to solve social problems.

4. What kind of things would Littleton Youth Club like to collect?

A. Old furniture and second-hand electrical equipment.

B. An apartment and some saucepans.

C. Hot food and storybooks.

D. A sum of money and children's toys.  

题型:解答题

下列与模型材料性能要求无关的是()。

A.有良好的流动性、可塑性

B.有适当的凝固时间,以35分钟为宜

C.精确度高

D.抗压强度大,表面硬度高

E.与印模材料不发生化学变化

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