如图为一匀强电场,某带电粒子从A点运动到B点,在这一运动过程中克服重力做的功为2

题型:选择题

问题:

如图为一匀强电场,某带电粒子从A点运动到B点,在这一运动过程中克服重力做的功为2.0J,电场力做的功为1.5J,则下列说法正确的是(   )

A.粒子带负电

B.粒子在A点的电势能比在B点少1.5J

C.粒子在A点的动能比在B点少0.5J

D.粒子在A点的机械能比在B点少1.5J

考点:动能定理
题型:选择题

下面句子中的标点符号使用正确的一项是[ ]

A、“嗨!”内德说:“我们很久没有爬悬崖了。”

B、每一穗花都是上面的盛开、下面的待放。

C、一般来说,红、黄……等深色蔬菜中的维生素含量超过浅色蔬菜。

D、虹在东方,有雷无雨,虹在西方,将有大雨。

题型:选择题

阅读理解:请根据短文内容,为每题确定l个最佳选项。

The National Trust。

The National Trust in Britain plays an increasingly important part in the preservation for public enjoyment of the best that is left unspoiled of the British countryside. Although the Trust has received practical and moral support from the Government, it is not a rich government department. It is a voluntary association of people who care for the unspoiled countryside and historic buildings of Britain. It is a charity which depends for its existence on voluntary support from members of the public. Its primary duty is to protect places of great natural beauty and places of historical interest.

The attention of the public was the first drawn to the dangers threatening the great old houses and the castles of Britain by the death of the Lord Lothian, who left his great seventeenth-century house to the Trust together with the 4500-acre park and estate surrounding it. This gift attracted wide publicity and started the Trust’s “Country House Scheme” Under this scheme, with the help of the Government and the general public, the Trust has been able to save and make accessible to the public about 150 of these oil houses. Lats year, about 1.75 million people paid to visit these historic houses, usually at a very small charge.

In addition to country houses and open spaces, the Trust now owns some examples of ancient wind and water mills, nature reserves, 540 farms and nearly 2500 cottages or small village houses, as well as some complete villages. In these villages no one is allowed to build, develop or disturb the old village environment in any way and all the houses are maintained in their original 16th century style. Over 4,000 acres of coastline , woodland, and hill country are protected by the Trust and no development or disturbances of any kind are permitted. The public has free access to these areas and is only asked to respect the peace, beauty and wildlife.

Over the past 80 years the Trust has become a big and important organization and an essential and respected part of national life. It helps to preserve all that and of historical significance not only for future generations of Britons but also for the millions of tourists who each year invade Britain in search of a great historic and cultural heritage.

We can infer from Paragraph 2 that Lord Lothian_______.

A.Donated all his money to the Trust.

B.Started the “Country House Scheme”.

C.Saved many old country bouses in Britain.

D.Was influential in his time

题型:选择题

1945年12月,美国关于日本战争赔偿问题的文件规定:拆迁日本的工业设备,并把日本的工业生产能力维持在20年代后半期的水平,日本人的生活水平不高于亚洲的其他国家。1949年美国政府决定大幅降低对日本的赔偿要求,1950年5月停止战争赔偿计划。造成美国政府变化的原因是 [ ]

A、扶植日本对抗西欧   

B、恢复日本经济,利用日本作为冷战工具对抗中国和苏联

C、与苏联争对日本的控制权   

D、缓和与日本矛盾,建立良好的盟友关系

题型:选择题

按贷款周转性质划分,贷款可分为()。

A、流动资金贷款

B、固定资产贷款

C、可循环贷款

D、不可循环贷款

题型:选择题

以下不属于一个好的概要设计要求是()。

A.良好的总体结构

B.功能模块间较高的耦合度

C.功能模块间较高的内聚度

D.尽量降低模块接口复杂性

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