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Directions: After reading the passage be...

Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Killer Rabbits

You’d never think of rabbits as dreadful, destructive creatures, would you? Rabbits are cute and love-able. However, Australians discovered 1. harm these cute creatures can do the hard way.

Rabbits were introduced to Australia in 1788 as food animals. By 1827, they were running around large estates, and in 1859, disaster struck. A man released 12 wild rabbits onto his property for hunting and he 2. have thought that was harmless fun. But Australia has no predators(捕食者)3. (adapt) to killing rabbits and none of the diseases that kept their populations 4. control in Europe. The loose rabbits bred like, well, rabbits, and began to take over the countryside. Within a few decades, there were millions. By 1950, there were 600 million rabbits in Australia.

Six hundred million hungry rabbits could do real harm. They caused more damage than any other species introduced to the continent. They ate native plant species 5. they disappeared. They competed for food and shelter with native animals. they caused the extinction or endangerment of numerous plant and animal species. And they were a nightmare for cattle and sheep farmers, 6. animals couldn't get enough grass to eat and starved.

The rabbits did some good, of course. They provided food for poor families. They supported fur industries. But their impact on the environment and major livestock economy was too negative 7.(ignore). People tried trapping them. They even built a huge wall against them. But 8.(effective) weapon was a virus.

9.(test) multiple times, the deadly myxoma virus was released on Australia's rabbits in 1950. The virus had been developed very carefully to affect only rabbits. Nearly 100 percent of the rabbits who caught the disease  10.(die).Populations fell. It was a huge success. Cattle and sheep farming recovered gradually, and threatened plants were better protected. Eventually, rabbits became resistant to the virus.

 

1.what 2.must 3.adapted 4.under 5.until 6.whose 7.to be ignored 8.the most effective 9.Having been tested 10.died 【解析】 本文是一篇说明文,介绍了兔子对澳大利亚的环境和畜牧业造成的影响以及当地的应对措施。 1.考查宾语从句。句意:然而,澳大利亚人发现了这些可爱的生物所造成的伤害。此处为宾语从句,从句中的do缺少宾语,故填what。 2.考查情态动词+have done结构。句意:一个人放了12只野兔到他的地里打猎,他一定认为那是无害的乐趣。must have done表示对过去事情最有把握的肯定推测,表示“一定……”,故填must。 3.考查非谓语动词。句意:但澳大利亚没有适合猎杀兔子的食肉动物,也没有让它们的数量在欧洲得到控制的疾病。be adapted to doing表示“适应做某事”,此处去掉be做后置定语,故填adapted。 4.考查介词。句意同上,under control表示“处于控制之下”,故填under。 5.考查连词。句意:它们吃本地的植物直到这些植物消失。分析句子结构可知此处缺少连词,根据句意可知此处表示“直到”,故填until。 6.考查非限定性定语从句。句意:而对于牛羊养殖户来说,这是一场噩梦,他们的牲畜无法获得足够的草来吃,并且挨饿。此处为非限定性定语从句,animals与先行词farmers之间是所属关系,用关系代词whose在从句中做定语,故填whose。 7.考查固定句式和被动语态。句意:但它们对环境和主要畜牧业经济的影响是不容忽视的。too…to表示“太……而不能”,impact与ignore之间是被动关系,故填to be ignored。 8.考查形容词最高级。句意:但最有效的武器是病毒。上文提到了人们通过诱捕和筑墙的方式控制兔子的数量,因此此处含有最高级含义,表示“最有效的”,故填the most effective 9.考查非谓语动词。句意:经过多次测试,致命的粘液瘤病毒于1950年在澳大利亚的兔子身上投放。the deadly myxoma virus与test之间是逻辑上的动宾关系,表示被动, 而且test这一动作明显发生在released之前,所以用现在分词的完成被动式做状语,故填Having been tested。 10.考查时态。句意:感染这种疾病的兔子几乎100%都死了。事情发生在过去,应该用一般过去时,故填died。
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    Most people, when they travel to space, would like to stay in orbit (轨道) for a few days or more. And this stands to reason, if you’re paying $ 20,000 for your trip to orbit! So in order for tourism to reach its full potential there’s going to be a need for space hotels. What would a space hotel actually be like to visit? Hotels in orbit will offer the services you expect from a hotel — private rooms, meals, bars. But they’ll also offer two unique experiences: impressive views — of Earth and space — and the endless entertainment of living in zero gravity — including sports and other activities that make use of this.

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    Camping wild is a wonderful way to experience the natural world and, at its best, it makes little environmental influence. But with increasing numbers of people wanting to escape into the wilderness, it is becoming more and more important to camp unobtrusively(不引人注目地) and leave no mark.

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