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1、课时分层作业(六)(建议用时：30分钟).单词拼写1 (疾病) often results from eating too much.2He is very ill and unlikely to (痊愈)3We (抓住) at every chance to improve our work.4He was the only one (在之中) many who needed help.5This wounded soldier was (无意识的) from his loss of blood.【答案】1.Sickness2.recover3.snatch4amongst5.unconsc
2、ious.语法填空Recently it has been observed that more and more people are switching to organic vegetables and fruits. They are 1. (nature) and safe for the human body to consume. Organic farming 2. (increase) and evolved in a large way due to this large demand by now. Farmers are getting better at the ar
3、t of growing organic vegetables and there are many 3. (help) tips that they share with other members of the organic farming circle. If you are a gardener and are 4. (interest) in growing organic vegetables, 5. is wise to be aware of these tips and choose 6. (good) organic garden tip that helps your
4、garden to produce healthy and better vegetables.One helpful organic garden tip that works well for all farmers is 7. (make) your own fertilizer. This is 8. kind of fertilizer made of dry leaves, fruit peelings and kitchen food disposables. These materials are buried underground and kept there 9. som
5、e time. With fermentation(发酵) taking place, the soil becomes richer with nutrients. This means you get a fertilizer that does not have chemicals at all. This fertilizer enhances the soil and so the vegetables and fruits are 10. (healthy) and better.【答案】1.natural2.has increased3.helpful4.interested5.
6、it6.the best7.to make8.a9.for10.healthier.阅读理解AThe koala，one of Australias most treasured creatures，is in trouble.Affected by habitat (栖居地) loss and climate change，like many other unique Australian animals，koalas are being squeezed into smaller regions.But at present，it is a deadly disease，a somewha
7、t silent killer that causes a further decline in the koala population，that is worrying many scientists about the fate of the koala.The killer is Chlamydia，which has caused symptoms in up to 50 percent of the wild koalas，with probably even more infected (感染) but not showing symptoms.It has been parti
8、cularly severe in Queensland，where nearly all koalas are infected.The disease causes many symptoms including eye infections，which can lead to blindness，making it difficult for them to find their primary food.Treating Chlamydia in wild koalas is a challenge.There is no treatment available for itOnly
9、a small percentage of the animals can be treated successfully and returned to the wild.Besides，there is no national plan in Australia to save the koala；it is up to each region to make management plans for its koala population.The good news is that researchers are working to test a vaccine (疫苗) that
10、would help prevent further spread.If all goes well，plans can be carried out to distribute the vaccine more widely.But its impossible to vaccinate all wild koalas.Another possibility would be to make vaccine distribution a routine part of treatment for the thousands of koalas brought into care center
11、s every year after they are injured by cars or dogs.While it is a combination of problems that are affecting the wild koala population，many experts believe this vaccine would be an important step in helping koalas survive longer.It may buy enough time to give researchers a chance to solve some of th
12、e other problems facing Australias koalas.【语篇解读】本文主要介绍澳大利亚的珍贵动物之一考拉现在处于困境之中。1Which isnt considered the main cause of koalas population decline? AA deadly disease.BInjuries from cars and dogs.CClimate change.DHabitat loss.【解析】推理判断题。第二段提到“Affected by habitat (栖居地) loss and climate change”以及后面提到的“deadl
13、y disease”可知选B。【答案】B2The third paragraph mainly tells us Athe serious result Chlamydia has caused to the koalaBChlamydia affected the koala only in particularregionsCthe most serious symptom of Chlamydia is eye infectionsDChlamydia can seriously affect koalas primary food 【解析】主旨大意题。根据第三段叙述可知主要叙述了这种疾
14、病给考拉造成的后果。【答案】A3The underlined word “it” in the fourth paragraph probably refers to Athe koalaBChlamydiaCnational planDeye infection 【解析】词义猜测题。根据上一句的叙述可知是“Chlamydia”。【答案】B4We can learn from the text that the vaccine Awould cure the killer Chlamydia quite effectivelyBwould only be distributed in koal
15、a care centersChas already been put into practical use in AustraliaDcannot be distributed to all the infected koalas【解析】推理判断题。根据第五段最后一句“But its impossible to vaccinate all wild koalas.”可知D正确。【答案】DBAustralians have been warned they face a life or death decision over their waterdrink recycled sewage or die.With the drought continuing，the country is set to be forced to use purified waste water for drinking，even though there is great opposition to the measure.Queensland has become t
