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23.4 I did some odd jobs for the purpose of ___ .(2分)
A
buying a pair of new boots
B
purchasing some luxury things
C
buying a Christmas tree
D
purchasing big groceries
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试题答案：
A
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相关题目
7. (A)celebrate (B)spend (C)take (D)keep
6. A. number B. person C. mistake D. fool
The more preparation you make for it,____in the speech contest.(1分)
1.Friction is a force which opposes motion. Much of the energy supplied to a complicated machine with many moving parts is wasted in overcoming this opposition. The energy is converted into useless heat. The amount thus lost can be considerably reduced and the life of the machine prolonged by careful lubrication. This reduction improves the efficiency of the machine. Another way in which friction is reduced is to substitute roller or ball bearings for the earlier type of bearing, in which the surfaces in contact move by sliding. Bearings of these later types are used very extensively in many kinds of modern machinery.It must not be assumed, however, that friction is always a disadvantage. In many instances it is highly important. Belts are often used in conveying power from one machine to another. In the absence of friction, this could not be done. The driving wheel would not run the belt, neither would the belt run the wheel to driver. Without friction, then, belted machinery could not be used. Again in the case of all motor vehicles, friction is essential in the operation of the brake. Were there no friction, there could be no brake. But even this illustration does not give an adequate picture of the importance of friction. The vehicle could not even be started if it were not for the friction exerted between the tires and the road. Nails hold in wood, and screws hold in either wood or metal by reason of friction, without which they would be useless. Walking is difficult enough on an icy pavement, but it would be wholly impossible if there were no friction at all between the shoe and the pavement.(5分)1.1 Friction arises when____.(1分)A. an opposing force of motion exists B. the energy is wastedC. everything is motionlessD. a complicated machine is supplied with energy
8. (A)trouble (B)problem (C)difficulty (D)disaster
My house is very____ for getting to work as it is only a few minutes from the station.
Would you please lend me that book when you _______ your thesis?(1分)
It was the Little Mermaid ________ saved the life of the prince, and traded in her voice for the chance the prince will love her in return.(1分)
In 2008, American was struck by the financial crisis, _______effects people are still suffering from.(1分)
The old man got into the____ of storing money under his bed.
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1.
Insurance agents are always friendly, well dressed, eager to be help.
2.
资料: 某企业在清算过程中的应收账款512000元，确认为坏账的有120 000元，其余应收款392 000元，最终仅收回300000元，存入银行，余款核销。 要求:编制确认坏账和最终结清应收款的会计分录。
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14、相关市场是经营者在一定时期内就特定商品或服务进行竞争而形成的相关
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19. 嗜中性WBC增加是 （ ）。（2分）
5.
5.A. tastes B. manners C. circumstances D. habits
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