分析 人類生長(zhǎng)激素是人體產(chǎn)生的一種天然激素,它能夠促進(jìn)孩子骨骼和肌肉的發(fā)育,科學(xué)家允許用它制作藥物,且在很多國(guó)家中注射生長(zhǎng)激素都是合法的.
然而,現(xiàn)在有些運(yùn)動(dòng)員開(kāi)始注射這種藥物.生長(zhǎng)激素能夠促進(jìn)成年人的生長(zhǎng)發(fā)育,且科學(xué)家證實(shí)注射這種激素能夠使運(yùn)動(dòng)員在短途快跑中提高5%的成績(jī).許多運(yùn)動(dòng)員聲稱該激素使他們更強(qiáng)壯,且使他們更快的從傷痛中恢復(fù).
由于這種激素不容易檢測(cè),因此很多運(yùn)動(dòng)員對(duì)他很癡迷.科學(xué)家發(fā)明了一種檢測(cè)方法,即使是注射兩周后也可以檢測(cè)出來(lái).但是這并不容易,因?yàn)槊總(gè)人的身體中都有生長(zhǎng)激素.
科學(xué)家提醒運(yùn)動(dòng)員,注射生長(zhǎng)激素可能會(huì)導(dǎo)致頭疼,更嚴(yán)重的是能夠?qū)е滦呐K肥大,高劑量的生長(zhǎng)激素增加癌癥風(fēng)險(xiǎn).但是這些后果并不能阻止運(yùn)動(dòng)員們使用這種激素,因此他們想的只有贏,隨后才會(huì)考慮自己的健康.
解答 51.D.推理判斷題.根據(jù)It is a natural substance(物質(zhì)) produced by the human body,and it helps children's bones and muscles(肌肉) to grow.可知,生長(zhǎng)激素是人體產(chǎn)生的一種天然物質(zhì),能夠促進(jìn)兒童骨骼和肌肉的發(fā)育,因此A、B正確;根據(jù)HGH is considered a wonder drug for children.It helps many children with growth problems every year.可知,生長(zhǎng)激素對(duì)于兒童來(lái)說(shuō)是一種神奇的藥物,它幫助許多兒童克服生長(zhǎng)上的問(wèn)題,因此C正確;D選項(xiàng)文章中并沒(méi)有提及;
52.A.段落主旨題.根據(jù)第二段的內(nèi)容,主要講的是然而,現(xiàn)在有些運(yùn)動(dòng)員開(kāi)始注射這種藥物.生長(zhǎng)激素能夠促進(jìn)成年人的生長(zhǎng)發(fā)育,且科學(xué)家證實(shí)注射這種激素能夠使運(yùn)動(dòng)員在短途快跑中提高5%的成績(jī).許多運(yùn)動(dòng)員聲稱該激素使他們更強(qiáng)壯,且使他們更快的從傷痛中恢復(fù).因此A.some athletes believe HGH can help them do better.是正確的,即有些運(yùn)動(dòng)員認(rèn)為生長(zhǎng)激素確實(shí)對(duì)他們有好處.
53.B.細(xì)節(jié)理解題.根據(jù)Testing is usually done only during competitions,but athletes use HGH during training,so it is very difficult to know who has used the drug.This makes it very attractive for some athletes.可知,檢測(cè)運(yùn)動(dòng)員有無(wú)注射激素通常是在比賽的時(shí)候才會(huì)進(jìn)行,但是運(yùn)動(dòng)員在訓(xùn)練的時(shí)候注射生長(zhǎng)激素,在比賽的時(shí)候很難檢測(cè)到,因此很多運(yùn)動(dòng)員對(duì)這種激素很著迷,原因就是很難檢測(cè)出來(lái).
54.C.詞義猜測(cè)題.根據(jù)HGH helps add muscle in adults and recent research by the World Anti-Doping Agency shows that HGH may improve the sportsman's time by 5% when he takes part in short,fast races.可知,在一些短途快跑的比賽中項(xiàng)目中,注射生長(zhǎng)激素可以提高運(yùn)動(dòng)員的比賽成績(jī),因此it is banned by most professional sports,大多數(shù)專業(yè)的運(yùn)動(dòng)會(huì)上都banned使用生長(zhǎng)激素,這里的banned應(yīng)該是禁止.
55.A.細(xì)節(jié)理解題.文中最后一段提到注射生長(zhǎng)激素的各種弊端,隨后寫(xiě)到But is this enough to stop athletes from taking it?Scientists don't think so.這是否能夠使運(yùn)動(dòng)員們停止使用這種激素,科學(xué)家說(shuō)并不會(huì),緊接著后文寫(xiě)到Some athletes will do all they can to win,and worry about their health later.一些運(yùn)動(dòng)員把贏得比賽放在第一位,其后才會(huì)考慮自己的身體,因此科學(xué)家害怕一些運(yùn)動(dòng)員會(huì)忽視生長(zhǎng)激素帶來(lái)的危險(xiǎn)而繼續(xù)使用它,因此答案為A.some athletes will pay no attention to the dangers of using HGH.
點(diǎn)評(píng) 本文是一篇科普類文章.做題時(shí)要在理解好文意的基礎(chǔ)上,與題目有機(jī)的結(jié)合,從文章中找到相關(guān)細(xì)節(jié)性的句子與選項(xiàng)細(xì)細(xì)比對(duì),進(jìn)行選擇或推理判斷,選出符合文章內(nèi)容的正確選項(xiàng).做題注意靈活,有時(shí)可采用排除法或直選法確定出最終答案.
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