[外语类试卷]专业英语四级(完形填空)模拟试卷8及答案与解析.doc
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1、专业英语四级(完形填空)模拟试卷 8及答案与解析 一、 PART III CLOZE (15 MIN) Directions: There are 20 blanks in the following passage. Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. 0 There are hidden factors which scientists call “ feedback mechanisms “. No
2、one knows quite how they will 【 C1】 _ with the changing climate. Heres one example: plants and animals, 【 C2】 _ to climate change over centuries.【 C3】 _ the current estimate of half a degree centigrade of warming per decade, vegetation may not keep 【 C4】 _. Climatologist James Hansen predicts climat
3、e zones will shift toward the poles【 C5】 _50 to 75 kilometers a yearfaster than trees can naturally migrate. Species that【 C6】 _ themselves in an unfamiliar environment will die. The 1,000-kilometre wide strip of forest running【 C7】_Canada, the USSR and Scandinavia could be cut 【 C8】 _. Millions of
4、dying trees would soon lead to massive forest fires, 【 C9】 _ tons of CO2 and further boosting global warming. There are dozens of other possible “feedback mechanisms“. Higher temperatures will【 C10】 _ condensation and increase cloudiness, which may actually【 C11】 _ down global warming. Others, like
5、the “albedo“ effect, will do the【 C12】 _. The “albedo“ effect is the amount of solar energy reflected by the earths surface. As the northern ice and snow【 C13】_and the darker sea and land pokes through, more heat will be absorbed,【 C14】 _ the temperature increase. Even if we【 C15】 _ to magically sto
6、p all greenhouse-gas【 C16】 _ tomorrow the impact on global climate would continue for decades.【 C17】 _ will simply make the problem worse. In the developed world prosperity has been 【 C18】 _on 150 years of cheap fossil fuels. Material progress has been linked 【 C19】 _ energy consumption. Today 75 pe
7、rcent of all the worlds energy is consumed by a quarter of the worlds population. The average rich world 【 C20】 _adds about 3. 2 tons of CO2 yearly to the atmosphere, more than four times the level added by each Third World citizen. 1 【 C1】 ( A) interact ( B) change ( C) deal ( D) cope 2 【 C2】 ( A)
8、adopt ( B) adore ( C) adapt ( D) advocate 3 【 C3】 ( A) For ( B) At ( C) In ( D) By 4 【 C4】 ( A) off ( B) down ( C) on ( D) up 5 【 C5】 ( A) at ( B) with ( C) on ( D) by 6 【 C6】 ( A) see ( B) observe ( C) find ( D) notice 7 【 C7】 ( A) across ( B) through ( C) cross ( D) over 8 【 C8】 ( A) in half ( B)
9、into halves ( C) by half ( D) by halves 9 【 C9】 ( A) refrain ( B) refresh ( C) relieve ( D) release 10 【 C10】 ( A) fuel ( B) cause ( C) reduce ( D) produce 11 【 C11】 ( A) decline ( B) defuse ( C) defy ( D) damp 12 【 C12】 ( A) same ( B) opposite ( C) opponent ( D) option 13 【 C13】 ( A) dissolves ( B)
10、 fuses ( C) melts ( D) decays 14 【 C14】 ( A) cutting down ( B) leading to ( C) adding to ( D) completing with 15 【 C15】 ( A) shall ( B) are ( C) will ( D) were 16 【 C16】 ( A) abolishment ( B) emissions ( C) deliveries ( D) discharges 17 【 C17】 ( A) Delay ( B) Deceive ( C) Destruction ( D) Deficit 18
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