【正文】 ce, 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. 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.s a good idea to know what each object weighs. The total weight of the filled pack should be no more than 10 to 15 percent of the wearer39。s body. Choose the right backpack. Forget leather （皮革）! It looks great, but it39。 a heavy backpack forces the muscles and spine to balance the unequal weight. This may increase the possible back problems later in life.More than 50 percent of young people suffer back pain by their teenage years. Research shows that this could be mainly caused （場）improper use of backpacks.Here39。 and even hurt the spinal column（脊柱）This can cause muscle strain, headaches, back, neck and arm pain.t know exactly how to choose, load, lift and wear themthese allimportant accessories（配件）can be a pain in the back. Not to mention the neck, head and shoulders. You think it39?！军c評】考查閱讀理解，首先通讀全文，了解全文大意，其次分析問題，抓住關鍵詞，在文中尋找相關信息，確定答案，最后再檢查一遍，確保答案正確。根據(jù)文章大意本文主要介紹提供一些問題和答案來說明人體是一臺能提出許多有趣問題的機器?？芍x項D符合文章內容，故選D。s a mon thing, but researchers don39。re hungry. 當你餓了的時候，你只會更清楚地聽到聲音?？芍x項A不符合文章內容，故排除A；As for the actual function of blushing, researchers are still trying to find that one ，研究人員仍在努力找出其中之一。（3）判斷正誤題。就會在胃里產生聲音。這些肌肉通過消化道輸送食物、液體和氣體。（2）細節(jié)理解題。你可以通過快速地將舌頭摩擦到口腔頂部來幫助熱身來改善冰淇淋頭痛。 Blood vessels in the head tighten to stop the loss of body heat and then relax to let blood flow rise。（1）詞義猜測題。Some Useful DiscoveriesD.Some Interesting FactsB.Researchers don39。Researchers have found out the actual function of blushing.C.s how it makes a difference to your digestive tract.（3）Which of the following statements is TRUE? A.re full.D.And that39。s why you39。re hearing when your stomach makes noise.B.And that39。D.C.B.s way of keeping our brains cool.（1）What is the meaning of the underlined word tighten? A.t have a good explanation for it. They do, however, know this happens only with humans and chimpanzees（黑猩猩）. A bigger question puzzling scientists is why we yawn at all. It used to be thought that yawning showed that oxygen to the brain was not enough, but that39。 Have you ever yawned in front of someone, only to have them yawn right back? It39。re embarrassed, your brain releases a shot of adrenaline（腎上腺素）, which makes your heart race and blood vessels bee larger in size. All this happens to increase blood flow and oxygen delivery throughout the body in a fightorflight reaction（對抗反應）. There are a lot of tiny blood vessels in your face, which turn noticeably redder from this sudden rush of blood. As for the actual function of blushing, researchers are still trying to find that one out.m embarrassed?re hungry. Think of your digestive tract（消化道）as a really long tube lined with smooth muscle tissue. These muscles move food, fluids and gas through your digestive tract. ___________. It can make you feel embarrassed（尷尬的）but is nothing to worry about.re hungry or full。m hungry? that sudden rush of blood is what causes the headache. You can improve an icecream headache by rapidly rubbing your tongue across the roof of your mouth to help warm up things.t exactly sure what causes the brain freeze when we eat ice cream or other super cold foods too quickly, though some believe it39。 Why do I get a headache when I eat ice cream too quickly? The human body is a machine that can raise lots of interesting questions. Why, for example, are yawns （呵欠） contagious （傳染的）? What39。細節(jié)理解題要可以直接從文中尋找答案；句義猜測題，需要根據(jù)單詞所在的語境，進行合理想象，確定句子的意思；標題判斷題需要在充分理解文章的基礎上，總結中心思想，凝練句式，最終確定答案。根據(jù)：It was a day when Lucy learned that perseverance pays off. 這一天露西知道堅持是有回報的， 可知答案是B. 【點評】考查閱讀理解。 第三段最后and over again until she finally reached her goal of going around the whole track without falling once，又一次，直到她最終達到了自己的目標，在整個賽道上不摔倒一次，故答案是C。 第三段第二行She fell many times她摔了很多次；第三段中間 She even took the bike off the track and into the main park to practice pushing off and picking up speed on a flat ground。 （4）細節(jié)排序題。 可知她甚至把自行車從跑道上帶到主公園練習在平坦的地面上推開和加速。 （3）細節(jié)理解題。 （2）句意猜測題。根據(jù)At first, I thought Lucy was able to ride her bike along the track, but she quickly found that her bike was too low to the ground and kept getting stuck on top of the bump. 可知，起初， 我以為露西可以沿著賽道騎車， 但她很快發(fā)現(xiàn)她的自行車離地太低，一直卡在隆起的路面上。有一天，露西知道堅持是有回報的。她不斷地振作起來，再試一次。她摔倒了很多次。露西騎自行車確實有很多困難。因為她還是個騎自行車的新手，我認為她很快就放棄了。D.Don39。B.Playing in the Park Is FunD.c﹣a﹣b﹣d.B.a﹣b﹣c﹣d.Feeling more confident and ing back.D.Being cheered on by everyone.B.Lucy would lose balance and slow the younger kids down.D.Lucy would get hurt and cry all the way home.B.D.To find her speed was too slow.B. This was not a day that ended in a disaster. It was a day when Lucy learned that perseverance pays off.（1）Why was Lucy taken to the park last weekend？ A.t find her balance. She fell many times. At one point, she almost started crying because younger kids were getting angry that she was slowing everyone else down. But she did not give up. She kept picking herself up and trying again. She even took the bike off the track and into the main park to practice pushing off and picking up speed on a flat ground. When she felt more confident, she came back. Then she did it over and over again until she finally reached her goal of going around the who