The rocket engine, with its steady roar like that of a waterfall or a thunderstorm, is an impressive symbol of the new space age.Rocket engines have 1 powerful enough to shoot astronauts 2 the earth’s gravitational pull and 3 them on the moon.We have now become 4 space.
Impressive and complex 5 it may appear, the rocket, which was 6 in China over 800 years 7 , is a relatively simple device.Fuel that is 8 in the rocket engine changes 9 gas.The hot and rapidly 10 gas must escape, but it can do so only 11 an opening that 12 backward.As the gas is 13 with great force, it 14 the rocket in the 15 direction. Like the kick of a gun 16 it is fired, it 17 the laws of nature 18 by Sir Isaac Newton when he discovered that“ 19 every action, there is 20 equal and opposite reaction.”
1.A.shown B.been C.appeared D.proved
2.A.against B.despite C.beyond D.from
3.A.send B.land C.take D.carry
4.A.travelers B.astronauts C.researchers D.explorers
5.A.that B.so C.as D.sometimes
6.A.made B.discovered C.developed D.invented
7.A.in advance B.before C.earlier D.ago
8.A.round B.contained C.stored D.burned
9.A.as B.into C.for D.the
10.A.heating B.escaping C.expanding D.conducting
11.A.in B.at C.by D.through
12.A.turns B.goes C.faces D.directs
13.A.transmitted B.dispersed C.erected D.radiated
14.A.attracts B.leads C.pulls D.pushes
15.A.same B.other C.opposite D.wrong
16.A.that B.when C.if D.although
17.A.states B.proves C.follows D.breaks
18.A.described B.discussed C.considered D.made
19.A.like B.as C.with D.for
20.A.no B.an C.another D.theCloze
1.【答案】D
2.【答案】C
【解析】根据意思判断，beyond意为“超出，超过”。
3.【答案】B
4.【答案】A
【解析】根据意思判断，travelers正确.
5.【答案】C
【解析】原句是表示让步的状语从句，而且是一个倒装句，故只能选C as。
6.【答案】D
【解析】根据词的意思区分，invented(指发明)合乎题意。
7.【答案】D
8.【答案】D
【解析】根据句子意思判断，burned正确。
9.【答案】B
【解析】change into是固定短语，“变成”的意思。
10.【答案】C
【解析】根据句子意思判断，应选expanding gas膨胀的气体。
11.【答案】D
【解析】through的意思为“穿过，通过”。
12.【答案】C
【解析】faces意为“朝着”。
13.【答案】D
14.【答案】D
【解析】根据句子意思判断，应为push“推”。
15.【答案】C
【解析】朝相反的方向，故选C。
16.【答案】B
【解析】when引导的定语从句。
17.【答案】C
【解析】根据句子意思判断, follow在这里是遵循的意思。
18.【答案】A
19.【答案】D
20.【答案】B
PETS三级完形填空全真模拟试题四
Historians tend to tell the same joke when they are describing history education in America. It’s the one 61 the teacher standing in the schoolroom door 62 goodbye to students for the summer and calling 63 them, "By the way, we won World War II."
The problem with the joke, of course, is that it’s 64 funny. The recent surveys on 65 illiteracy (无知) are beginning to numb(令人震惊): nearly one third of American 17-year-olds cannot even 66 which countries the United States 67 against in that war. One third have no 68 when the Declaration of Independence was 69 . One third thought Columbus reached the New World after 1750. Two thirds cannot correctly 70 the Civil War between 1850 and 1900. 71 when they get the answers right, some are 72 guessing.
Unlike math or science, ignorance of history cannot be 73 connected to loss of international 74 . But it does affect our future 75 a democratic nation and as individuals. The 76 news is that there is growing agreement 77 what is wrong with the 78 of history and what needs to be 79 to fix it. The steps are tentative (尝试性的) 80 yet to be felt in most classrooms.
61. A) about B) in C) for D) by
62. A) shaking B) waving C) nodding D) speaking
63. A) in B) after C) for D) up
64. A) rarely B) so C) too D) not
65. A) historical B) educational C) cultural D) political
66. A) distinguish B) acknowledge C) identify D) convey
67. A) defeated B) attacked C) fought D) struck
68. A) sense B) doubt C) reason D) idea
69. A) printed B) signed C) marked D) edited
70. A) place B) judge C) get D) lock
71. A) Even B) Though C) Thus D) So
72. A) hardly B) just C) still D) ever
73. A) exclusively B) practically C) shortly D) directly
74. A) competitiveness B) comprehension C) community D) commitment
75. A) of B) for C) with D) as
76. A) fine B) nice C) surprising D) good
77. A) to B) with C) on D) of
78. A) consulting B) coaching C) teaching D) instructing
79. A) done B) dealt C) met D) reached
80. A) therefore B) or C) and D) as
[完形填空答案]
61.A about 62. B waving 63.B after 64.D not 65.A historical
66.C identify 67.C fought 68.D idea 69.B signed 70.A place
71. A Even 72.B just 73. D directly 74. A competitiveness 75.D as
76. D good 77.C on 78. C teaching 79. A done 80.C and
本文导航第1页完形填空第2页阅读理解一第3页阅读理解二第4页阅读理解三第5页写作第6页写作参考译文Directions：Read the text below. Write an essay in about 120 words，in which you should summarize the key points of the text and make comments on them. Try to use you own words.
Beijing has extended its ban on operating outdoor barbecues from the city center outward to selected suburbs，according to municipal authorities.
A year ago，Beijing banned restaurants from operating outdoor barbecues within the fourth ring road area. And now，the ban has extended to several suburbs，including Mentougou，Fangs- han，Tongzhou，Shunyi，Daxing，Pinggu and Miyun.
The barbecue ban was announced to reduce Beijing‘ s air pollution，as barbecue has long been accused as one of the major contributors to haze.
According to Wang Yuesi，a researcher from the Institute of Atmospheric Physics in Chinese Academy of Sciences，barbecuing can generate a lot of PM 2.5， harmful airborne particles measur- ing less than 2.5 microns in diameter.
“Considering the seriousness of the air pollution in Beijing，we have to ban everything that may do harm to our environment”Wang said.
The issue has divided Chinese netizens，as half agreed with the policy while the other half called this grand plan nothing but “empty talk. ”
A sample of comments from Weibo：“Why don‘ t those petrochemical plants，power stations and other heavy industries be banned?What is the Ministry of Environmental Protection going to do next?We still need to eat，so please allow us to cook!”
“Right decisions to resolve PM2.5 pollution problems，the option which made by governors is legalistic reserve for ‘pubhc profits’ courses，”some people said.
【参考范文】
Beijing has released many rules and policies to deal with the most eyecatching environmental issues now——smog. Recently， a new regulation was announced that the region of banning of outdoor barbecues is going to be ex- tended from the downtown to countryside.
The government claims barbecue causes great air pollution and is the major culprit of environmentally harmful substances to the air which meet that standard of PM 2.5.
This policy caused great controversy among the citizens in those areas. Some advocates are willing to give up their rights of enjoying the outdoor barbecue， in order to make contribution to the environment. But the others tagged this policy as “empty talk”， as they are more concerned about the pollution from the chemical toxins from the heavy industries.
In my opinion， it is essential to take some steps to protect the environment in Beijing. We should support it ff this measure show the function that keeps the air cleaner. What is more， to eat less barbecue is not a bad idea， as barbecue is not healthy.
