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单选题Apparently the long drought has retarded the trees' growth in this area.A slowed down B retained C propelled D fed
题目
slowed down
retained
propelled
fed
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第1题：
Running an electric winch at slow speed over a long period of time causes ______．
A.the speed to be retarded by the friction brake
B.a load to go downward at full speed
C.the circuit breaker to turn off
D.the resistors to overheat and eventually burn out
正确答案：D
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第2题：
The economic reform in Japan has been accelerated.A:sped up
B:put off
C:slowed down
D:stopped答案：A解析：本句意思：日本的经济改革已经加速了。speed up的意思为“加速”;put off的意思为 “推迟”;slow down的意思为“减速”;stop的意思为“停止”。accelerate意思为“加速；促进；增 加”，和speed up的意思接近。 -
第3题：
资料：Economic performance is improving in most of the world's leading economies but is still short of a self-sustaining upswing, the Organization for Economic Cooperation and Development said on Wednesday.
In an update to its economic forecasts, the Paris-based international organisation representing advanced economies said that more private sector investment was needed for the expansion to endure, for wages to rise sustainability and for inequalities to be tackled.
Although all leading economies are now recording positive growth, Catherine Mann, the OECD's chief economist, urged governments to “curb your enthusiasm [ because] strong and sustained medium-term global growth is not yet secured”.
The OECD's economic outlook shows upgrades to the 2017 growth forecasts in China, Russia and Europe excluding the UK with the world outlook also appearing stronger in 2018.
World growth should rise from a low of 3.1 per cent in 2016, to 3.5 per cent this year and 3.7 per cent in 2018, the OECD forecast, with the US, the Eurozone, Brazil and Russia contributing most to the improved global outlook.
China's predicted growth rate of 6.8 per cent in 2017 and 6.6 per cent in 2018 has been revised higher by 0.2 percentage points in both years and although India's growth rate has been revised down, reflecting adjustment to its new goods and services tax, it is likely to remain the fastest growing large economy in the world.
Only the UK, which remains embroiled in Brexit negotiations, has a deteriorating outlook. Responding to the OECD's forecast that the British economy will be the slowest growing in the Group of Seven in 2018 having been near the top of the league table in 2016, the British Treasury said it was not complacent.
According to the passage,which one of the following statement is true？A.The Russia’s 2017 economic growth forecast has been revised higher.
B.The leading economies have achieved sustainable long-term growth.
C.The OECD is not optimistic about China's economic growth.
D.India's economic growth forecast have been upgraded.答案：A解析：本题考查细节理解。
【关键词】 which one of the following statement is true
【主题句】第3、4、6自然段.Although all leading economies are now recording positive growth, Catherine Mann, the OECD’s chief economist, urged governments to “curb your enthusiasm [ because] strong and sustained medium-term global growth is not yet secured”.尽管所有主要经济体如今都记录的正增长，但经合组织首席经济学家凯瑟琳?曼（Catherine Mann）敦促各国政府“抑制激情，（因为）强劲且持续的中期全球增长尚未得到保障”。
The OECD’s economic outlook shows upgrades to the 2017 growth forecasts in China, Russia and Europe excluding the UK with the world outlook also appearing stronger in 2018.经合组织在经济展望中，上调了对中国、俄罗斯和欧洲（除英国外）2017年的增长预测，2018年的全球经济前景似乎也更加强劲。
China’s predicted growth rate of 6.8 per cent in 2017 and 6.6 per cent in 2018 has been revised higher by 0.2 percentage points in both years and although India’s growth rate has been revised down, reflecting adjustment to its new goods and services tax, it is likely to remain the fastest growing large economy in the world.中国在2017年和2018年的预期增速分别达到和，分别被上调0.2个百分点。虽然印度的增长率遭到下调（反映根据该国新的商品及服务税作出的调整），但印度很可能仍是全球增长最快的大型经济体。
【解析】题干意为“下列哪一项是正确的？选项A意为“俄罗斯2017年经济增长预测被上调”；选项B意为“发达经济体已经获得长期可持续增长”；选项C 意为“经合组织对中国经济增长不乐观”；选项D意为“印度经济增长被上调”。根据主题句可知，选项B、C、D与题意不符，故选项A正确。 -
第4题：
In autumn, the（）fall down from the trees.
Aleaf
Bleafs
Cleaves
C
略 -
第5题：
我们的重吊杆已经长时间不用了。（）
- A、Our derrick has been out of use for a long time.
- B、Our heavy derrick has been out of use for a long time.
- C、Our crane has been out of use for a long time.
- D、Our winch has been out of use for a long time.
正确答案:B -
第6题：
单选题Which of the following is NOT true about the early 1990s?AEconomic growth slowed down in Europe and Japan.
BThere was less investment in industrialized countries.
CEmerging markets received little surplus funds from developed economies.
DThe rate of return on investments turned out to be low.
正确答案： D解析：
录音的开始提到“二十世纪九十年代早期，经济增长减缓，特别是日本和欧洲，使得工业国家的投资处于疲弱态势且降低了投资的预期回报率”，所以A、B和D项的表述都正确。随后还讲到“global financial integration proceeded so that surplus funds from developed economies spilled over to selected developing economies called emerging markets.”(全球经济一体化继续进行，以至于发达经济体的剩余资金蔓延到叫做新兴市场的发展中经济体)，所以C项错误。 -
第7题：
单选题Once a scavenge fire is detected the engine （）.Awill be speeded up
Bshould be slowed down
Cmust slow down
Dhave to be slow down
正确答案： D解析： 暂无解析 -
第8题：
单选题What doesn’t the old tree tell us?AHe’s afraid to be cut down someday
BHe has fewer and fewer friends
CThe trees have the longest lives in the world
DHe has lived for thousands of years
正确答案： A解析：
通读An old tree的描述可知，它没有提到树木的寿命最长，因此选择C项。在第二句它提到“I am afraid I will be cut someday”，可知A项语义正确。第一句提到“I have fewer and fewer friends”，可知B项语义正确。第一句提到“I am thousands of years old”，因此D项语义正确。 -
第9题：
单选题Why do forests in many parts of the world slowly disappear?ANew trees are not looked after properly.
BMany trees have been cut down by man.
CMan has not paid enough attention to planting trees.
DAll of the above.
正确答案： C解析：
细节题。第二段列举了森林减少的原因。 -
第10题：
单选题The plane's onward movement was slowed by adverse winds. Because of this, it was _____slowing down.Afinancially
Bahead
Cadvantageously
Dprogressively
正确答案： C解析：
progressively渐渐地。financially财政上。ahead在前面，向前。advantageously有利地。 -
第11题：
问答题Practice 11 (1) Research has also been done into the way people’s behavior changes in a number of small, apparently unimportant ways when they lie. (2) It has been found that if they are sitting down at the same time, they tend to move about in their chairs more than usual. To the trained observer they are saying “I wish I were somewhere else now.”正确答案：
(1) 当人们撒谎时,行为会有一系列小的、看起来不重要的改变,对此人们也进行了研究。
(2) 研究显示,如果人们在撒谎的同时坐下,他们倾向于比平时更频繁地在椅子上动来动去。解析： 暂无解析 -
第12题：
单选题Walnut trees ______ environment stresses such as drought by producing significant amounts of a substance similar to aspirin.Aturn to
Bconfirm to
Ccontribute to
Drespond to
正确答案： D解析： -
第13题：
Walnut trees __________ environment stresses such as drought by producing significant amountsof a substance similar to aspirin.
A.turn to
B.confirm to
C.contribute to
D.respond to答案：D解析：考查动词短语辨析。turn to“转向；变成；求助于；致力于；开始行动”，confirm to“证实”，contribute to“有助于”，respond to“对……反应”。句意为“面对来自环境的压力，例如干旱，胡桃树会释放大量类似阿司匹林的物质”。D项最符合句意。 -
第14题：
The economic reform in Japan has been accelerated.A:sped up
B:put off
C:slowed down
D:stopped答案：A解析：本句意思：日本的经济改革已经加速了。accelerate意思是“加速，加快”，与speed up（加速）意思相近。put off推迟；slow down减速；stop停止。 -
第15题：
She couldn‘t take shorthand，_______slowed down the work of the office.A.that
B.which
C.it
D.so答案：B解析： -
第16题：
In autumn, the（）fall down from the trees.
- A、leaf
- B、leafs
- C、leaves
正确答案:C -
第17题：
单选题In autumn, the（）fall down from the trees.Aleaf
Bleafs
Cleaves
正确答案： C解析： 暂无解析 -
第18题：
单选题Running an electric winch at slow speed over a long period of time causes（）.Athe speed to be retarded by the friction brake
Ba load to go downward at full speed
Cthe circuit breaker to turn off
Dthe resistors to overheat and eventually burn out
正确答案： B解析： 暂无解析 -
第19题：
问答题练习14 Research has also been done into the way people’s behavior changes in a number of small, apparently unimportant ways when they lie. It has been found that if they are sitting down at the same time, they tend to move about in their chairs more than usual.正确答案： 当人们撒谎时,行为会有一系列小的、看起来不重要的改变,对此人们也进行了研究。研究显示,如果人们在撒谎的同时坐下,他们倾向于比平时更频繁地在椅子上动来动去。解析： 暂无解析 -
第20题：
单选题AIt affects the growth of trees.
BIt has been increasing since the Ice Age.
CIt is determined by the chemicals in the air.
DIt follows a certain cycle.
正确答案： A解析：
细节题。录音明确提到“the sun has cycles”，最后说明“The scientists concluded that solar wind activity must follow the same cycle.”可推断“Solar wind activity follows a certain cycle”。故选D。
【录音原文】
You can tell the age of a tree by counting its rings. But these records of a tree’s life really say a lot more. Scientists are using tree rings to learn what’s been happening on the sun’s surface for the last 10,000 years. Each ring represents a year of growth. As a tree grows, it adds a layer to its trunk, taking up chemical elements from the air. By looking at the elements in the rings from a given year, scientists can tell what elements were in the air that year. Doctor Stevenson is analyzing one element: carbon 14 in rings from both living and dead trees. Some of the rings go back almost 10,000 years to the end of the Ice Age. When Stevenson followed the carbon 14 trail back in time, he found carbon 14 levels change with the intensity of solar burning. You see, the sun has cycles. Sometimes it burns fiercely, at other times it’s relatively calm. During the sun’s violent periods it throws off charged particles in fast moving streams called solar winds. The particles interfere with the formation of carbon 14 on Earth. When there’s more solar wind activity, less carbon 14 is produced. Ten thousand years of tree rings show that the carbon 14 level rises and falls about every 420 years. The scientists concluded that solar wind activity must follow the same cycle.
Questions 1 to 3 are based on the passage you have just heard.
1. What’s the purpose of the scientists in studying tree rings?
2. What affects the amount of carbon 14 on Earth?
3. What do we learn from the passage about solar wind activity? -
第21题：
单选题When one upbound vessel is overtaking another vessel and both are pushing a tow ahead，what reaction may you expect（）.ABoth towheads will tend to drift apart，and the overtaking vessel will be slowed down
BBoth towheads will tend to drift together，and the overtaking vessel will be slowed down
CBoth towheads will tend to drift apart，and the overtaken vessel will be slowed down
DBoth towheads will tend to drift together，and the overtaken vessel will be slowed down
正确答案： A解析： 暂无解析 -
第22题：
单选题我们的重吊杆已经长时间不用了。（）AOur derrick has been out of use for a long time.
BOur heavy derrick has been out of use for a long time.
COur crane has been out of use for a long time.
DOur winch has been out of use for a long time.
正确答案： A解析： 暂无解析 -
第23题：
单选题Why does land become desert after all trees are cut down?ABecause nothing remains on land except floods.
BBecause there are no longer trees to keep the rain and protect the top-soil.
CBecause too much rain sinks in and washes away the top-soil.
DBecause roots of the trees break up the soil.
正确答案： B解析：
推理题。第三段最后一句指出“When all the top-soil is gone, nothing remains but worthless desert.”表层土壤流失导致了沙漠化，而树木是可以防止水土流失的。