【文章內(nèi)容簡(jiǎn)介】 heaviest objects close to the body, and place little ones outside, away from the back. Putting the backpack on. Put the pack on a smooth surface, at waist height. Put on the pack, one shoulder at a time, then adjust（調(diào)整）the straps to fit fortably. Remember when lifting a backpack, or anything, to lift using the arms and legs and to bend at the knees. The right way to wear a backpack. Both shoulder straps should be used, and adjusted so that the pack fits the body, without hanging to one side. Backpacks should never be worn over just one shoulder. You should be able to move your hands between the backpack and your back. The waist strap should also be worn. Take the above advice, and you may not plain back pain, numbness or weakness in your arms and legs any more.（1）What could mainly cause some young people to suffer back pain by their teenage years? A.Too much homework.B.Poor treatment for backs.C.Improper use of backpacks.D.Unhealthy sleep position（2）Which of the following does the writer suggest?①Choose leather backpacks because it looks cool to go to school.②Pick a pack that its size is suitable for the wearer39。s body.③Make sure the backpack contains only what is needed for that day④Pack heaviest objects close to the body, and place little ones outside.⑤Put the pack on a smooth surface, above the waist height.A.①②④B.①③⑤C.②③④D.②③⑤（3）If a boy weighs 40kg, how heavy should his filled backpack be at most? A.About 4kg.B.About 6kg.C.About 10kg.D.About 15kg.（4）What is the passage mainly about? A.Some problems that teenagers face in their study at school.B.The suitable backpack material that you should choose.C.The good influence that backpacks have on your healthD.Some advice on how to carry backpacks fortably and safely.【答案】 （1）C（2）C（3）B（4）D 【解析】【分析】短文大意： 短文主要講述背包影響學(xué)生的健康，如何舒服地和安全地使用背包。 （1）細(xì)節(jié)理解題。根據(jù) More than 50 percent of young people suffer back pain by their teenage years. Research shows that this could be mainly caused （場(chǎng)）improper use of backpacks. 可知不正確使用背包可能誰(shuí)引起背疼。故選C。 （2）細(xì)節(jié)判斷題。根據(jù) Make sure the pack fits properly and its size is suitable for the wearer39。s body. 保證背包的大小與背書包的人相符，即②；Only put in the pack what is needed for that day. 需要的時(shí)候才背書包，即 ③ ；Pack heaviest objects close to the body, and place little ones outside, away from the back. 當(dāng)背重物的時(shí)候，背包需要貼近身體，背輕的東西時(shí)，可以離遠(yuǎn)點(diǎn)，即 ④ ；故選C。 （3）細(xì)節(jié)理解題。根據(jù) The total weight of the filled pack should be no more than 10 to 15 percent of the wearer39。s own body weight. 這個(gè)男孩四十公斤，可知他最多背15%40kg=6kg，故選B。 （4）此題考查主旨大意。這篇短文主要對(duì)如何正確使用背包使人更舒服更安全給出的幾點(diǎn)建議，故選D。 【點(diǎn)評(píng)】此題考查閱讀理解。先閱讀短文，理解短文大意。然后進(jìn)行審題，弄清題意，帶著問(wèn)題閱讀短文，從短文的細(xì)節(jié)中找出細(xì)節(jié)理解問(wèn)題的答案。對(duì)于主旨大意題要根據(jù)文章的中心思想確定。6．根據(jù)短文內(nèi)容，判斷下列句子正誤。 Do you often listen to music at loud volumes （音量）? You should know that this habit is bad for your hearing. Over 1 billion young people are at risk of hearing loss （聽(tīng)力喪失） ,because of listening to loud noise for long periods of time. Listening to music or watching a TV show at loud volumes can harm your hearing. The United Nations has standards for safe listening. It is not safe to listen to sounds that are louder than 85 dB （分貝） for eight hours or 100 dB for 15 minutes. The sound of a busy road is about 85 dB and the sound of a rock concert can be about 100 dB. Loud noise is harmful to the inner二Most of us are bon with about 16,000 hair cells （聽(tīng)毛細(xì)胞） in our inner ears. These cells notice sounds. However, listening to loud noise for a long time can make these cells work too hard and cause some of them to die. This is what causes hearing loss. Once this happens, it39。s hard to get your hearing back. Some people might think that their music isn39。t all that loud. But this can depend on where you are. For example, if you are in a noisy place like the subway, you might turn up your music too loud without realizing it. Later, when you listen to it at the same volume in a quiet place, you alight feel unfortable The safe level for most sound is below 80 dB for up to 40 hours a week. A level of 80 dB is about equal to （相當(dāng)于） the noise of a subway. Here is some advice on safe listening. Over—the—ear headphones （頭戴式耳機(jī)） are better than in—ear ones. They do a better job of stopping outside noise, so you can listen at a lower volume. Don39。t listen to loud music on your headphones for a long time. Follow the 60:60 rule: listen to music at 60 percent of your headphones39。 maximum volume for no more than 60 minutes a day.（1）It is safe to listen to sounds that are louder than 100 dB for 15 minutes （2）Listening to loud noise for a long time can cause some hair cells in the inner ear to die. （3）From the fourth paragraph, we know people don39。t always realize how loud their music is. （4）In—ear headphones are better than over—the—eat ones because they can stop more outside noise. （5）This article mainly tells us why ears are an important part of our bodies. 【答案】 （1）0（2）1（3）1（4）0（5）0 【解析】【分析】文章大意： 本文主要講述了聽(tīng)大音量音樂(lè)的習(xí)慣對(duì)聽(tīng)力有害。世界衛(wèi)生組織稱，超過(guò)10億的年輕人在聽(tīng)力方面存在問(wèn)題，因?yàn)樗麄冮L(zhǎng)時(shí)間大聲聆聽(tīng)。聯(lián)合國(guó)有安全聆聽(tīng)標(biāo)準(zhǔn)。聽(tīng)八十小時(shí)大于85分貝或15分鐘大聲100分鐘的聲音是不安全的。長(zhǎng)時(shí)間聆聽(tīng)大聲的聲音可能會(huì)使這些細(xì)胞工作太猛，并使其中一些細(xì)胞死亡。這就是人們聽(tīng)力損失的原因。 （1）判斷正誤題。根據(jù) It is not safe to listen to sounds that are louder than 85 dB （分貝） for eight hours or 100 dB for 15 minutes. 可知挺高于85分貝八個(gè)小時(shí)或者100分貝15分鐘是不安全的。故答案為錯(cuò)誤。 （2）判斷正誤題。根據(jù) However, listening to loud noise for a long time can make these cells work too hard and cause some of them to die. 可知聽(tīng)大聲的噪音很長(zhǎng)時(shí)間能使這些耳毛細(xì)胞工作太猛，造成一些耳毛細(xì)胞死亡，故答案為正確。 （3）判斷正誤題。根據(jù) if you are in a noisy place like the subway, you might turn up your music too loud without realizing it. 可知如果你在像地鐵這樣吵鬧的地方，你可能無(wú)意識(shí)的把聲音調(diào)到太大，可知第四段告訴我們?nèi)藗儾豢偸悄芤庾R(shí)到他們的音樂(lè)有多大聲，故答案為正確。 （4）判斷正誤題。根據(jù) Over—the—ear headphones （頭戴式耳機(jī)） are better than in—ear ones. They do a better job of stopping outside noise, so you can listen at a lower volume. 可知頭戴式耳機(jī)比置入式耳機(jī)更好，故答案為錯(cuò)誤。 （5）判斷正誤題。通讀全文可知大意是：聽(tīng)大聲的音樂(lè)對(duì)聽(tīng)力有害，不是講耳朵是人體重要的組成部分，故答案為錯(cuò)誤。 【點(diǎn)評(píng)】考查閱讀理解能力，首先通讀全文，掌握大意，然后根據(jù)細(xì)節(jié)判斷所給句子的正確，注意要找到依據(jù)。7．閱讀短文，從每題所給的A、B、C和D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。 Hob