最严重的牙内陷是() A.锥形牙 B.畸形舌侧窝 C.牙中牙 D.畸形根面沟 E.畸

题型:单项选择题

问题:

最严重的牙内陷是()

A.锥形牙

B.畸形舌侧窝

C.牙中牙

D.畸形根面沟

E.畸形舌侧尖

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题型:单项选择题

请根据以上资料,选择以下栏目的正确选项:

“运输方式”栏()。

A.管道运输

B.铁路运输

C.江海运输

D.汽车运输

题型:单项选择题

B

When TV news programs report wars or disasters, the editors rarely use the most horrifying pictures of dead or wounded victims because they don’t want to upset their viewers. Even so, viewers are usually warned in advance that they may find some of these scenes disturbing, so they can look away if they choose. But the men and women whose job is to record those scenes-the TV cameramen-have no such choice. It is their duty to witness the horrors of the world and record them, no matter how terrible and unpleasant they may be. Consequently, it is one of the most dangerous, exposed and emotionally taxing jobs the world has to offer.

Today, the demand for their work is rising. The explosion of satellite broadcasting and 24-hour news in recent years has created an almost insatiable (贪得无厌的) demand for TV information. But major broadcasters and the TV news agencies—such as Reuters and WTN-have never had enough staff to meet the worldwide demand for up-to-date pictures, so increasingly they turn to “freelance” TV cameramen.

These freelance cameramen are independent operators tied to no particular organization. They will work for any company which hires them, be it for just a few hours or for several weeks in a war zone. But if the freelance cameraman is injured in the course of the job, the TV company is not responsible for him. The freelancer must survive on his own.

TV will always need hard, vivid moving pictures which are fresh, but these companies feel uncomfortable with large numbers of employees on their books, explains Nick Growing, once foreign editor for Britain Channel 4 News and now a BBC news presenter.

By hiring freelancers, they can buy in the skills they need only when they need them. It also enables them to contract out the risk, he says.

69. The freelance cameramen             .

A. have better skills than other cameramen

B. are tied to many TV news agencies

C. have to take tremendous(巨大的) risks in the course of work

D. need to contract out risks of work for TV companies

70. It is implied in the passage that          .

A. TV cameramen have to witness disasters and killing whether they like them or not

B. TV cameramen are a special group of people who enjoy horrifying pictures

C. TV cameramen should be given greater choice of work

D. the development of TV resulted in the growing demand for TV cameramen’s work

71. According to this passage, some major broadcasters and TV news agencies            .

A. have employed enough cameramen

B. are not willing to employ many cameramen

C. are very mean to freelancers

D. are responsible for the freelancer if he is injured

72. The author of this passage shows his           the freelance cameramen.

A. respect for      B. sympathy to       C. anger to        D. admiration to

题型:单项选择题

两位同学利用图乙所示的可以绕O点自由转动的健身器材进行锻炼,甲同学竖直向下用力F1将另一端的乙同学拉起。请画出拉力F1的力臂L1

题型:单项选择题

如何提高减压塔的拔出率?

题型:单项选择题

储运图示标志对于商品的运输非常重要,对于需要控制温度的商品,图示标志是(),并标明高低温度。

A太阳

B温度计

C雨伞

D高脚酒杯

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