It may be necessary, in order that
.future{{U}} (51) {{/U}}can enjoy clean air, that more of the{{U}}
(52) {{/U}}is borne by long-term central government fund.As air
pollution varies enormously from place to place and can, indeed, be very local,
it may also be necessary for the central government to{{U}} (53)
{{/U}}money so that local authorities can{{U}} (54) {{/U}}special
local problems. That these can be significant was shown by the report made in
1970{{U}} (55) {{/U}}behalf of the London Boroughs Association. This{{U}}
(56) {{/U}}that in central London since 1958 smoke concentrations have
decreased by 80 percent, whereas sunshine has increased by 70 percent and winter
visibility has{{U}} (57) {{/U}}threefold, There have been{{U}} (58)
{{/U}}in mortality and hospital admissions{{U}} (59) {{/U}}with air
pollution and in the response to it of bronchitis, as well as clear if less
documented increases in plant types and bird{{U}} (60) {{/U}}n the
cities.
【正确答案】
B
【答案解析】A项habitat(s)是可数名词,指的是动物的“生活环境,栖息地”。如:Asia is the habitat of the tiger.亚洲是老虎生活的自然环境所在。D项inhabit是动词,意为live in。C项inhabit ant指的是生活在一个地区的“居民”,本题中应用inhabitant的复数形式,指地球上居住的人,所以B为正确答案。
【答案解析】A项spacious是形容词,意思是“宽敞,广阔”。B项spades意为“铁锹”或扑克牌中的“黑桃”。C项species指的是生物学中的“种,类”,如:The Origin of Species《物种起源》。而 D项spice指的是有强烈刺激味的佐料,如姜粉、辣椒或咖喱等。这句中讲的是鸟类的种类,即 kinds of birds,应选C。