Everybodylovestohateinvasivespecies.Theinternationallis...
问题详情:
Everybody loves to hate invasive species. The international list of invasive species—defined as those that were introduced by humans to new places, and then __41__ — runs to over 4,000. In Australia and New Zealand hot war is fought against introduced creatures like cane toads (蔗蟾蜍) and rats.
Some things that are uncontroversial (无争议的) are nonetheless foolish. With a few important exceptions, campaigns to __42__ invasive species are merely a waste of money and effort — for reasons that are partly practical and partly philosophical.
Start with the practical arguments. Most invasive species are neither terribly successful nor very__43__. Britons think themselves surrounded by foreign plants. __44__, Britain’s invasive plants are not widespread, not spreading especially quickly, and often less of a(n) __45__ than vigorous native plants. The arrival of new species almost always __46__ biological diversity (多样*) in a region; in many cases, a flood of newcomers drives no native species to extinction. One reason is that invaders tend to colonise __47__ habitats like polluted lakes and post-industrial wasteland, where little else lives. They are nature’s opportunists.
The philosophical reason for starting war on the invaders is also __48__. Elimination campaigns tend to be __49__ by the belief that it is possible to restore balance to nature — to return woods and lakes to the state before human __50__. That is misguided. Nature is an everlasting mess, with species constantly emerging, withdrawing and hybridizing (杂交). Humans have only quickened these processes. Going back to ancient habitats is becoming __51__ in any case, because of man-made climate change. Taking on the invaders is a(n) __52__ gesture, not a means to an achievable end.
A reasonable attitude to invaders need not imply passivity. A few foreign species are truly __53__ and should be fought: the Nile perch – a fish, has helped drive many species of fish to extinction in Lake Victoria. It makes sense to __54__ pathogens (病菌), especially those that destroy whole native tree species, and to stop known agricultural pests from gaining a foothold. Fencing off wildlife reserves to create open-air ecological museums is fine, too. And it is a good idea for European gardeners to destroy Japanese plants, just as they give no apace to native harmful grasses like bindweed and ground elder. You can garden in a garden. You cannot garden __55__. That is universally accepted.
41. A. multiplied B. shrunk C. disappeared D. harvested
42. A. conserve B. eliminate C. investigate D. prioritize
43. A. healthy B. intentional C. harmful D. profitable
44. A. As a result B. For example C. By contrast D. In fact
45. A. attraction B. dominance C. annoyance D. substitute
46. A. increases B. destroys C. reveals D. targets
47. A. oppressed B. disturbed C. cultivated D. preserved
48. A. acceptable B. needless C. mistaken D. convincing
49. A. fuel(l)ed B. organized C. interrupted D. greeted
50. A. civilization B. interference C. interaction D. maintenance
51. A. tolerable B. impossible C. beneficial D. critical
52. A. reluctant B. disorderly C. invalid D. unbalanced
53. A. damaging B. flexible C. doubtful D. outstanding
54. A. pick up B. take in C. keep out D. turn down
55. A. agriculture B. vegetation C. atmosphere D. nature
【回答】
ABCDC
ABCAB
BCACD
知识点:*经济文化类
题型:完型填空
-
下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水...
问题详情:下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水超过容量瓶刻度,应用胶头滴管将多余溶液吸出C.配制1mol·L-1300mLNaCl溶液可以选择一个50mL的容量瓶和一个250mL的容量瓶D.可以用右图装置进行*气的...
-
设复数(是虚数单位),则复数的虚部为( )A. B. C. ...
问题详情:设复数(是虚数单位),则复数的虚部为( )A. B. C. D.【回答】B知识点:数系的扩充与复数的引入题型:选择题...
-
(1)观察下图,请将下列国家的英文字母代号填入答题卡图中对应的方框内。早期殖*家:A.葡萄牙 B.英国(2)...
问题详情:(1)观察下图,请将下列国家的英文字母代号填入答题卡图中对应的方框内。早期殖*家:A.葡萄牙 B.英国(2)仔细观察该图,据图指出奴隶贸易的主要集运地的分布特点。【回答】 (1)上框B,下框A。(2)主要分布在非洲西海岸和东海岸。知识点:血腥的资本积累题型:综合题...
-
一个质量为4kg的物体静止在足够大的光滑水平地面上.从t=0开始,物体受到一个大小和方向周期*变化的水平力F作...
问题详情:一个质量为4kg的物体静止在足够大的光滑水平地面上.从t=0开始,物体受到一个大小和方向周期*变化的水平力F作用,力F的变化规律如图所示.则( )A.t=2s时物体沿负方向运动的位移最大B.t=4s时物体运动的位移达最小值C.每个周期内物体的速度变化为一定值D.从t=0开...
相关文章
- Thevolunteerswhohelpthehomelesschildrenbelievethatevery...
- 改错:Doyoubelieveloveisthemostimportant?Intheearlytwentyc...
- SeveraltimeseachyeartheQueengivesafternoonteaparties.B...
- 阅读下列短文,回答问题InBritainstudentshavetwohoursofPEeveryschool...
- Itisveryeasytocookinstantnoodles(方便面)inashorttimebyputt...
- 任务型阅读Motorbikeisaveryconvenientvehicle.Howeverthere’san...
- Withalltheresponsibilities(责任)wefaceinourdailylives,it’...
- 阅读理解Inalmosteverybiguniversity(大学)intheUnitedStates,foo...
- Todevelopone’stasteinEnglish,themosteffectivewayistorea...
- Sowethinkitisreasonabletoassumethattheylivedinthesecav...