作業(yè)精煉：unit5-first-aid--using-language(基礎(chǔ)練)(編輯修改稿)
2025-04-03 03:24 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 【答案】1. B 2. D 3. C 4. C【解析】這是一篇說(shuō)明文。文章對(duì)一種可以用于醫(yī)學(xué)治療的外星機(jī)器人進(jìn)行了說(shuō)明。根據(jù)第二段第二句“These millimeterwide xenobots can move toward a specific target and pull themselves through after being cut.”（這些毫米寬的外星機(jī)器人可以移動(dòng)到一個(gè)特定的目標(biāo)，并在被切割后將自己拉過(guò)去。 ）可知外星機(jī)器人在被切割后可以恢復(fù)自身。故選 B。根據(jù)第四段的第三句“The heart cells are petent in expanding and contracting”（心臟細(xì)胞能夠擴(kuò)張和收縮）可推測(cè)，心臟細(xì)胞幫助機(jī)器人運(yùn)動(dòng)， “l(fā)ootion”意思是運(yùn)動(dòng)。故選 D。根據(jù)第五段第二句中的“these kinds of roboanisms could possibly be the key to drug transmission in the body”（這些機(jī)器生物可能是藥物在體內(nèi)傳播的關(guān)鍵）可知外星機(jī)器人可以被用來(lái)在病人體內(nèi)運(yùn)送藥物。故選 C。根據(jù)最后一段中“we’re going to get unintended consequences”（我們將會(huì)得到意想不到的后果）可知機(jī)器人可能帶來(lái)無(wú)法預(yù)測(cè)的結(jié)果，因此可推測(cè)還需要更多的研究。故選 C。2Many people fear a visit to the dentist. They are not so much afraid of the doctor, but of the dental equipment and treatments. For over a century, dentists have been repairing the bad tooth in the same way. They first remove the bad tooth tissue with an electricpowered drill. Then, they fill the hole with a certain material. If the hole is deep and near the nerve of the tooth, it can be very painful. The worst part is that the process of drilling and filling the hole has to be repeated for the entire life of that tooth.A British pany called Reminova says it has developed a kind of technology that will end the need for mechanical cleaning of bad teeth. It also says the technology speeds up a natural process of tooth repair. The new treatment begins with a cleaning of the hole. This does not 5require power tools. The dentist covers the problem area with a mineral solution, and then uses an electrical current to harden this material. The electricity is too weak for the patient to feel. And the hardened mineral pletely fills the hole.Researchers say this method could be especially useful for children. Sometimes children have bad experiences at the dentist’. They fear the drilling and injections. If they have a better experience of going to the dentist’, they’ll be much more positive in later life and probably bee much more regular patients. The new method is most efficient on the earlystage bad tooth. The whole treatment lasts about as long as a normal drillandfill visit. They believe the new technology can be further developed for treating the latestage bad tooth.5. What do we know about the traditional treatment for the bad tooth?A. The experience can be unpleasant.B. The bad tooth will be taken out directly.C. It costs much money.D. The bad tooth can be cured once and for all.6. Which of the following is TRUE about the new tech
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