6.Hawaii is an important trading center and about six million tourists visit there every year.With all that traffic in and out,exotic species(外來物種)have plenty of opportunities to reach the islands.According to biologists,exotic species are the number one threat to the state's economy,environment,and way of life.
The question in Hawaii is,can the invaders be stopped?
Quarantines are one way to do this.Quarantine is the process of isolating animals or products.In Hawaii,pet dogs and cats coming into the state remain in a special holding facility for four months to make sure they don't have rabies(狂犬病) Many agricultural products are also quarantined to see if they are carrying insect pests or plant diseases.
Inspection is a second way to stop biological invaders.At airports,borders,and shipping ports,inspectors examine passengers and their baggage to see if they are carrying exotic species.The inspectors also destroy fruits,vegetables,or other goods that might be carrying harmful pests or diseases.Specially trained dogs also smell goods in the ship for exotic species.
What if an exotic species slips by inspectors?Then efforts are made to control the invader.In Hawaii,government agencies control invaders by setting livetraps around wildlife shelters and other places.At Haleakala National Park employees have built miles of fences to keep out exotic pigs and goats.For years these animals ate and walked over native rain forest plants,hut the fences have helped reverse(逆 轉(zhuǎn))this damage.Now native plants grow in places that were bare rock only a short time ago.
In some cases biological control helps to solve the exotic species problems.It is the science of controlling one invader with another.In the early 1900s,several exotic predators(肉食動物) were imported to Hawaii to eat a harmful exotic pest called the sugarcane leafhopper.The insect was destroying 70,000 tons of sugar a year,but the predators brought it under control.
The efforts of these scientists and other people are vitally important.In Hawaii alone,10,000 different species of native plants and animals still need to be protected.Many of these are found nowhere else on earth.By stopping the spread of the biological invaders,we not only protect ourselves,but we also protect the many other native species that make our planet such a special place to live.
63.This passage is mainly aboutA.
A.the methods for preventing exotic species
B.the effects of exotic invasion on Hawaii
C.the problems faced by the Hawaiian economy
D.the role of biologists in controlling native species
64.Hawaii is at a great risk of invasion by exotic species,becauseC.
A.many agriculture products grow there
B.regular inspections of animals are useless
C.millions of people go to Hawaii each year
D.biological control efforts have not worked
65.Which of the following statements is true?A
A.Animals and products are put in quarantines before entering Hawaii.
B.Trained dogs are used to examine passengers and their baggage.
C.Livetraps and fences are set to protect exotic pigs and goats.
D.Some exotic predators are imported to destroy invaders'food.
66.What argument does the author make in the last paragraph?B
A.Hawaii has the most unknown species of plants on earth.
B.Humans have a responsibility to control exotic species.
C.Scientists make the difference to the species protection.
D.Species should be allowed to exist without human interruption.
分析 本文論述了夏威夷采取的種種控制外來物種入侵的措施及所取得了成果.
解答 ACAB
63.A 本題考查主旨大意.文章從第三段開始到第六段,每一段的第一句即主旨句,論述了夏威夷采取的種種控制外來物種入侵的措施,最后一點進行了綜合概括,從而可以推斷出文章的主旨就是:阻止外來物種入侵的手段.
64.C 本題考查考生的細節(jié)查找能力.根據(jù)文章第一段Hawaii is an important trading center and about six million tourists visit there every year.With all that traffic in and out,exotic species(外來物種)have plenty of opportunities to reach the islands.可知夏威夷面臨物種入侵的危險是因為每年有數(shù)百萬的人來此觀光旅行.
65.A 本題考查考生的細節(jié)查找能力.根據(jù)第三段In Hawaii,pet dogs and cats coming into the state remain in a special holding facility for four months to make sure they don't have rabies(狂犬。甅any agricultural products are also quarantined to see if they are carrying insect pests or plant diseases.可知動物和農(nóng)作物在進入夏威夷之前要先進行隔離.根據(jù)Specially trained dogs also smell goods in the ship for exotic species.可排除B項;根據(jù)倒數(shù)第三段government agencies control invaders by setting livetraps around wildlife shelters and other places.可排除C項;根據(jù)倒數(shù)第二段several exotic predators(肉食動物) were imported to Hawaii to eat a harmful exotic pest…可排除D項.
66.B 本題考查考生的推理判斷能力.根據(jù)最后一段:A項中的 the most與事實不符;C項與倒數(shù)第一段第一句The efforts of these scientists and other people are vitally important.不符;D項中的without human interruption文章未提到.
點評 做閱讀時經(jīng)常犯錯的主要原因是,僅憑讀過文章后殘留在腦海中的一絲印象來勾選答案,這樣便很容易掉入出題人故意設布下的題目陷阱.所謂閱讀理解,對于題目的理解一定要忠實于原文,因此,每一道題都應該與原文作全面的對比與核查,再得出答案.也就是說,閱讀理解的每一道題目,在原文都應該有明確的出處,我們把這一出處叫做原文相關句,(1)排除與原文相關句主題不一致的選項(2)排除與原文相關句態(tài)度相反的選項 (3)排除用于過于極端或負面的選項(4)注意結(jié)合文章主旨和主題去排除.