手机APP下载

您现在的位置: 首页 > 专业四级 > 完型填空 > 专四完型练习附答案 > 正文

专四完形模拟练习附答案:第18期

来源:大家论坛 编辑:Jasmine   可可英语APP下载 |  可可官方微信:ikekenet

Directions: Decide which of the choices given below would correctly complete the passage if inserted in the corresponding blanks. Select the correct choice for each blank.

Flight simulator (飞行模拟器) refers to any electronic or mechanical system for training airplane and spacecraft pilots and crew member by simulating flight conditions. The purpose of simulation is not to completely substitute (1)_____ actual flight training but to thoroughly familiarize students with the vehicle (2)_____ before they (3)_____ extensive and possibly dangerous actual flight training. Simulations also is useful for review and for familiarizing pilots with new (4)_____ to existing craft.

Two early flight simulators appeared in England within a decade after the first flight of Orville and Wilbur Wright. They were designed to enable pilots to stimulate simple aircraft (5)_____ in three dimensions: nose up or down; left wing high and right low, or vice versa; and (6)_____ to left or right. It took until 1929, however, for a truly effective simulator, the Link Trainer, to appear, devised by Edwin A. Link, a self-educated aviator and inventor from Binghamton, New York. (7)_____, airplane instrumentation had been developed sufficiently to permit "blind" flying on instruments alone, but training pilots to do so involved (8)_____ risk. Link built a model of an airplane cockpit equipped (9)_____ instrument panel and controls that could realistically stimulate all the movements of an airplane. Pilots could use the device for instrument training, manipulating the controls (10)_____ instrument readings so as to maintain straight and level flight or (11)_____ climb or descent with no visual reference (12)_____ any horizon except for the artificial one on the instrument panel. The trainer was modified (13)_____ aircraft technology advanced. Commercial airlines began to use the Link Trainer for pilot training, and the US government began purchasing them in 1934, (14)_____ thousands more as World War II approached.

Technological advances during the war, particularly in electronics, helped to make the flight simulator increasingly (15)_____. The use of efficient analog computers in the early 1950s led to further improvements. Airplane cockpits, controls, and instrument displays had by then become so individualized that it was no longer feasible to use a generalized trainer to prepare pilots to fly anything (16)_____ the simplest light planes. By the 1950s, the US Air Force was using simulators that precisely (17)_____ the cockpits of its planes. During the early 1960s (18)_____ digital and hybrid computers were adopted, and their speed and flexibility revolutionized simulation systems. Further advances in computer and (19)_____ technology, notably the development of virtual-reality simulation, have made it possible to (20)_____ highly complex real-life conditions.

1.

A. for B. to C. with D. on

2.

A. concerning B. concern C. being concerned D. concerned

3.

A. undertake B. undergo C. underplay D. underuse

4.

A. models B. modifications C. modifiers D. modica

5.

A. manifestations B. manipulations C. manifestoes D. maneuvers

6.

A. yawling B. yawning C. yawing D. yawping

7.

A. From then on B. From now on C. By now D. By then

8.

A. considerable B. considerate C. considerin D. considered

9.

A. for B. in C. with D. on

10.

A. on the part of B. on the basis of C. on the track of D. on the verge of

11.

A. control B. controllable C. controlled D. controller

12.

A. to B. for C. on D. in

13.

A. as for B. as to C. as D. for

14.

A. acquiring B. requiring C. sustaining D. retaining

15.

A. actual B. realistic C. realizing D. true

16.

A. except B. except for C. apart from D. but

17.

A. replenished B. replaced C. replicated D. reposed

18.

A. electronic B. electric C. electricity D. electron

19.

A. program B. programmable C. programmed D. programming

20.

A. resurrect B. reproduce C. resuscitate D. resume

答案:

1-5. ADBBD

6-10. CDACB

11-15. CACAB

16-20. DCADB

重点单词   查看全部解释    
hybrid ['haibrid]

想一想再看

n. 混血儿,杂种,混合物

联想记忆
instrumentation [,instrumen'teiʃən, ,instrə-]

想一想再看

n. 乐器法;使用仪器;仪表化

 
permit ['pə:mit,pə'mit]

想一想再看

n. 许可证,执照
v. 允许,许可

联想记忆
decade ['dekeid]

想一想再看

n. 十年

联想记忆
artificial [.ɑ:ti'fiʃəl]

想一想再看

adj. 人造的,虚伪的,武断的

联想记忆
pilot ['pailət]

想一想再看

n. 飞行员,领航员,引航员
vt. 领航,驾

联想记忆
effective [i'fektiv]

想一想再看

adj. 有效的,有影响的

联想记忆
flexibility [.fleksə'biliti]

想一想再看

n. 灵活性,柔韧性,适应性

联想记忆
realistic [riə'listik]

想一想再看

adj. 现实的,现实主义的

 
feasible ['fi:zəbl]

想一想再看

adj. 可行的,可能的

联想记忆


关键字: 练习 答案 完形 模拟

发布评论我来说2句

    最新文章

    可可英语官方微信(微信号:ikekenet)

    每天向大家推送短小精悍的英语学习资料.

    添加方式1.扫描上方可可官方微信二维码。
    添加方式2.搜索微信号ikekenet添加即可。