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
正确答案是
2.
A. concerning
B. concern
C. being concerned
D. concerned
正确答案是
3.
A. undertake
B. undergo
C. underplay
D. underuse
正确答案是
4.
A. models
B. modifications
C. modifiers
D. modica
正确答案是
5.
A. manifestations
B. manipulations
C. manifestoes
D. maneuvers
正确答案是
6.
A. yawling
B. yawning
C. yawing
D. yawping
正确答案是
7.
A. From then on
B. From now on
C. By now
D. By then
正确答案是
8.
A. considerable
B. considerate
C. considering
D. considered
正确答案是
9.
A. for
B. in
C. with
D. on
正确答案是
10.
A. on the part of
B. on the basis of
C. on the track of
D. on the verge of
正确答案是
11.
A. control
B. controllable
C. controlled
D. controller
正确答案是
12.
A. to
B. for
C. on
D. in
正确答案是
13.
A. as for
B. as to
C. as
D. for
正确答案是
14.
A. acquiring
B. requiring
C. sustaining
D. retaining
正确答案是
15.
A. actual
B. realistic
C. realizing
D. true
正确答案是
16.
A. except
B. except for
C. apart from
D. but
正确答案是
17.
A. replenished
B. replaced
C. replicated
D. reposed
正确答案是
18.
A. electronic
B. electric
C. electricity
D. electron
正确答案是
19.
A. program
B. programmable
C. programmed
D. programming
正确答案是
20.
A. resurrect
B. reproduce
C. resuscitate
D. resume
正确答案是
答案:
1.A 2. D 3. B 4. B 5. D 6. C