【文章內(nèi)容簡介】 the headache. You can improve an icecream headache by rapidly rubbing your tongue across the roof of your mouth to help warm up things. What causes my stomach to make a low continuous noise when I39。m hungry? Actually, your stomach makes noise whether you39。re hungry or full。 you just hear it more clearly when you39。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. Why do I blush when I39。m embarrassed? When you39。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. Why are yawns contagious? Have you ever yawned in front of someone, only to have them yawn right back? It39。s a mon thing, but researchers don39。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。s just a myth. A growing body of research now shows that yawning is nature39。s way of keeping our brains cool.（1）What is the meaning of the underlined word tighten? A.變松B.變緊C.變短D.變長（2）Which of the following sentences can be filled in the blank? A.And that39。s what you39。re hearing when your stomach makes noise.B.And that39。s why you39。re so hungry when your stomach is emptyC.And that39。s what makes you feel unfortable when you39。re full.D.And that39。s how it makes a difference to your digestive tract.（3）Which of the following statements is TRUE? A.There is no way for you to improve an icecream headache.B.Researchers have found out the actual function of blushing.C.Your stomach makes noise only when you are hungry.D.Researchers don39。t have a good explanation for why yawns are contagious.（4）What is the best title of the passage? A.Some Interesting FactsB.Our Strange BodyC.Some Useful DiscoveriesD.Our Amazing Feelings【答案】 （1）B（2）A（3）D（4）B 【解析】【分析】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。（1）詞義猜測題。根據(jù) Blood vessels in the head tighten to stop the loss of body heat and then relax to let blood flow rise。 that sudden rush of blood is what causes the headache然后放松，讓血液流動起來；這種突然的血液流動是導致頭痛的原因。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。由relax，放松，動詞，可知放松讓血液流動，推知阻止血液流動的應該是變緊，因此tighten的意思是變緊，故選B。（2）細節(jié)理解題。根據(jù)上文These muscles move food, fluids and gas through your digestive tract. 把你的消化道想象成一條很長的管道，內(nèi)襯著平滑肌組織。這些肌肉通過消化道輸送食物、液體和氣體。可已推知這些肌肉通過消化道輸送食物、液體和氣體。就會在胃里產(chǎn)生聲音。故選A。（3）判斷正誤題。根據(jù)You can improve an icecream headache by rapidly rubbing your tongue across the roof of your mouth to help warm up ?？芍x項A不符合文章內(nèi)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?？芍x項B不符合文章內(nèi)容，故排除B； you just hear it more clearly when you39。re hungry. 當你餓了的時候，你只會更清楚地聽到聲音?？芍x項C不符合文章內(nèi)容，故排除C；It39。s a mon thing, but researchers don39。t have a good explanation for it. 這是一件很平常的事情，但研究人員對此沒有很好的解釋?？芍x項D符合文章內(nèi)容，故選D。（4）標題判斷題。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。只有選項B，才能揭示文章的大意，故選B?！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。6．閱讀理解 You think it39。s cool to carry your backpacks and head out to school. But if you don39。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. Backpacks can influence your health. Carrying a heavy load improperly can lead to poor body position。 and even hurt the spinal column（脊柱）This can cause muscle strain, headaches, back, neck and arm pain. For example, if it is carried on one shoulder。 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。s some advice to help you carry backpacks fortably and safely. Choose the right backpack. Forget leather （皮革）! It looks great, but it39。s far too heavy. Go for canvas（帆布）. Pick a pack that has two wide, adjustable, fortable shoulder straps（帶子）, along with a hip or waist strap, and plenty of pockets. Make sure the pack fits properly and its size is suitable for the wearer39。s body. Packing it properly. Only put in the pack what is needed for that day. It39。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 own body weight. Pack 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 sl