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2018年12月四六級(jí)真題答案
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選詞填空 FBMDGEHKIO
Millions die early from air pollution each year。 Air pollution costs the global economy more than $5 trillion annually in welfare costs， with the most serious damage occurring in the developing world。
The figures include a number of costs associated with air pollution。 Only considering lost income alone amounts to $225 billion a year。
The report includes both indoor and outdoor air pollution。 Indoor pollution， which includes sources like home heating and cooking， has remained constant over the past several decades despite advances in the area。 Levels of outdoor pollution have grown rapidly along with rapid growth in industry and transportation。
Director of Institute for Health Metrics and Evaluation Chris Murray described it as an “urgent call to action。” “One of the risk factors for premature deaths is the air we breathe， over which individuals have little control，” he said。
The effects of air pollution are worst in the developing world， where in some places lost labor income equals nearly 1% of GDP。 Around 9 in 10 people in low and middle income countries live in places where they regularly experience dangerous levels of outdoor air pollution。
But the problem is not limited exclusively to the developing world。 Thousands die prematurely in the U.S。 as a result of related ailments。 In many European countries， where diesel vehicles have become more common in recent years， that number reaches in the tens of thousands。
26。 F damage
27。 B associated
28。 M sources
29。 D constant
30。 G described
31。 E control
32。 H equals
33。 K regularly
34。 I exclusively
35。 O vehicles
匹配 DBGAI FCJEG
D 36.More than half the food Americans eat is factory-produced。
B 37.There is a special program that assigns doctors to give advice to shoppers in food stores。
G 38.There is growing evidence from research that food helps patients recover from various illnesses。
A 39.Ahealthy breakfast can be prepared quickly and easily。
I 40.Training a patoent to prepare healthy food can change their life。
F 41.One food-as-medicine program not only prescribes food for treatment but teachers patients how to cook it。
C 42.Scott is not keen on cooking food herself， thinking it would simply be a waste of time。
J 43.Diabetes patients are advised to eat more plant-based food。
E 44.Using food as medicine is no novel idea， but the movement is making headway these days。
G 45.Amencans‘ high rates of various illnesses result from the way they eat。
仔細(xì)閱讀 BBADC DBBAC
46。 How could California‘s drought crisis be solved according to some researchers?
B) By drawing water from the depths of the earth。
47。 What can be inferred about extracting water from deep aquifers?
B) It was not considered worth the expense。
48。 What is mentioned as a consequence of extracting water frome deep enderground?
A) The sinking of land surface 。
49。 What does the author say about deep wells?
D) They provide a steady supply of freshwater。
50。 What may happen when deep aquifers are used as water sources?
C) The cost may go up due to desalination。
51。 What does the author want to show with the example of AlphaGo`s victory?
D)Computers can become highly intelligent。
52。 What does the author mean by Al machines acting ethically?
B)They weigh the gains and losses before reaching a decision。
53。 What is said to be the bigger challenge facing humans in the AI age?
B)How to ensure that super-intelligent Al machines act ethically。
54。 What do we learn Microsoft‘s `chatbot`Taylor?
A)She could not distinguish good from bad。
55。
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