【正文】 。根據(jù) 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.可知是為了以更簡單的方式進行練習(xí)， 故答案是B。根據(jù)第一段but she quickly found that her bike was too low to the ground and kept getting stuck on top of the bump但她很快發(fā)現(xiàn)她的自行車離地太低， 一直卡在顛簸的頂部。 她甚至把自行車從跑道上帶到主公園練習(xí)在平坦的地面上推開和加速。 （5）標(biāo)題判斷題。本文涉及細(xì)節(jié)理解題、句意猜測題，細(xì)節(jié)排序題和標(biāo)題判斷題。3．閱讀理解 s up with icecream headaches? Here are answers to these and other questions about our bodies. Scientists aren39。s the result of changed blood .flow in the nervous system. Blood vessels in the head tighten to stop the loss of body heat and then relax to let blood flow rise。 What causes my stomach to make a low continuous noise when I39。 Actually, your stomach makes noise whether you39。 you just hear it more clearly when you39。 Why do I blush when I39。 When you39。 Why are yawns contagious?s a mon thing, but researchers don39。s just a myth. A growing body of research now shows that yawning is nature39。變松變緊變短變長（2）Which of the following sentences can be filled in the blank? A.s what you39。And that39。re so hungry when your stomach is emptyC.s what makes you feel unfortable when you39。And that39。There is no way for you to improve an icecream headache.B.Your stomach makes noise only when you are hungry.D.t have a good explanation for why yawns are contagious.（4）What is the best title of the passage? A.Our Strange BodyC.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。根據(jù) 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(dǎo)致頭痛的原因。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(yīng)該是變緊，因此tighten的意思是變緊，故選B。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?？梢淹浦@些肌肉通過消化道輸送食物、液體和氣體。故選A。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B不符合文章內(nèi)容，故排除B； you just hear it more clearly when you39。可知選項C不符合文章內(nèi)容，故排除C；It39。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。（4）標(biāo)題判斷題。只有選項B，才能揭示文章的大意，故選B。4．閱讀理解 s cool to carry your backpacks and head out to school. But if you don39。 Backpacks can influence your health. Carrying a heavy load improperly can lead to poor body position。 For example, if it is carried on one shoulder。s some advice to help you carry backpacks fortably and safely.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。 Packing it properly. Only put in the pack what is needed for that day. It39。s own body weight. Pack heaviest objects close to the body, and place little ones outside, away from the back. 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.Too much homework.B.Improper use of backpacks.D.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.①③⑤C.②③⑤（3）If a boy weighs 40kg, how heavy should his filled backpack be at most? A.About 6kg.C.About 15kg.（4）What is the passage mainly about? A.The suitable backpack material that you should choose.C.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。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）improper use of backpacks. 可知不正確使用背包可能誰引起背疼。 （2）細(xì)節(jié)判斷題。Make sure the pack fits properly and its size is suitable for the wearer39。 當(dāng)背重物的時候，背包需要貼近身體，背輕的東西時，可以離遠(yuǎn)點，即 ④ ；故選C。根據(jù) s own body weight. （4）此題考查主旨大意。 【點評】此題考查閱讀理解。然后進行審題，弄清題意，帶著問題閱讀短文，從短文的細(xì)節(jié)中找出細(xì)節(jié)理解問題的答案。5．閱讀下列短文，從每題所給的A、B、C三個選項中選出最佳答案。 If you look at the top of your phone, you39。 On March 30, Shanghai vicemayor Wu Qing made the first 5G video call on a Huawei Mate X Smartphone. Shanghai has also bee the first city in China to start testing 5G networks.t just bring faster mobile internet. People can use it for many other things as well.s selfdriving test cars have one problemlag（延遲）. When the car sees an obstacle（障礙物）, it sends this information to a data center and receives instructions, However, it will be some time before it sends and receives this information. With this kind of lag, the cars might crash because they don39。 The IoT could be used in a lot of ways. For example, with IoT, your refrigerator could automatically （自動地） place an order online for eggs when it finds that there are no eggs left inside.（1）Which city was 5G tested for the first time? A.Shanghai.C.5G is widely used in China now.B.There are no symbols at the top of our phones.（3）The writer uses selfdriving cars as an example to . A.s fast speed can be helpfulB.explain how selfdriving cars work（4）What is IoT according to the passage? A.An online store where you can buy anything.C.5G will help us buy eggs quickly.B.Our refrigerator can order eggs online for us.【答案】 （1）B（2）B（3）A（4）C（5）C 【解析】【分析】短文大意：當(dāng)人們看手機上方的時候，會看到3G或者4G的小符號。但是，當(dāng)5G網(wǎng)絡(luò)全面覆蓋時，這些符號將會成為過去時。5G將會在很多方面改善人們的生活。根據(jù) Shanghai has also bee the first city in China to start testing 5G networks。故選B。根據(jù)About 100 times faster than 4G networks， 5G will let people download