2007年考研《英語模擬考場》模擬試題(2)及答案

Part B    本部分內(nèi)容請參見211頁   

Part C   

Directions:  Read the following text carefully and then translate the underlined segments   into Chinese. Your translation should be written clearly on ANSWER SHEET 2. （10 points）  

All U.S. nuclear weapons production facilities are presently closed down，and if the   various agreements are adhered to， those facilities will never be required except for one   critical capability. All modern nuclear weapons use uranium （鈾）， plutonium（钚）， and   tritium（氚）. Uranium and plutonium have very long half-lives， and there is large surplus of these materials. 

Tritium， however， has a relatively short half-life of about 12.6 years，so about 5 percent of the amount on hand must be replaced each year to maintain the current inventory. （46） Because of the large retirement of nuclear weapons by the United States in compliance with early agreements and national policy， tritium from retired weapons has been used to make up that lost through natural decay . （47） However，in about 10 to 15  years，depending on future negotiations，the United States will need a guaranteed supply of tritium to maintain its stockpile at whatever level is agreed on . 

In anticipation of this future need to produce tritium，Defense Office Executive is   pursuing two technologies. One uses a nuclear reactor that could also produce electricity whose sale would recover not only the capital cost of the reactor but also its annual   operational cost. （48）Unfortunately，the present Administration has a definite bias against nuclear power， so an alternative method is also being pursued even though it is agreed that it will cost twice as much as a reactor and use as much electricity as a reactor would produce . This technology uses an accelerator to produce high-energy protons that in turn produce neutrons. 

The main argument for the accelerator is that it produces no conventional nuclear wastes. （49）Proponents readily admit that it will produce radioactive materials， but with a relatively short half-life compared with that of wastes from spent nuclear fuel . The fact   that the accelerator will require the equivalent of a nuclear power plant to supply its   electricity is ignored. 

（50）Proponents also neglect to mention that about 22 percent of all electrical energy   generated in the United States comes from nuclear power plants，so that 22 percent of the   power used by the accelerator will generate conventional nuclear wastes，in addition to those the accelerator produces . There is an alternative to either the reactor or the   accelerator， which is simply to buy the required tritium from Canada or Russia.

Section Ⅲ Writing

Part A  

51. Direction:   

Yesterday you learnt in a newspaper ad that there is a job vacancy in a foreign-owned   company. A secretary for the manager is needed. Write a letter to its personnel department，and 

1） show your desire for the position， 

2） present your qualifications， 

3） and express your wish for an job interview.   

Part B  

52. Direction: 

A. Study the following account of a personal experience carefully and write an essay in   no less than 200 words. 

B. Your essay must be written clearly on ANSWER SHEET 2. 

C. Your essay should meet the requirements below: 

1） Elaborate your impressions on the story told. 

2） And point out its implications in our life. 

You should write about 200 words neatly on ANSWER SHEET 2. （20 points）