【文章內容簡介】 hool.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生的健康，如何舒服地和安全地使用背包。 （1）細節(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）improper use of backpacks. 可知不正確使用背包可能誰引起背疼。故選C。 （2）細節(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. 需要的時候才背書包，即 ③ ；Pack heaviest objects close to the body, and place little ones outside, away from the back. 當背重物的時候，背包需要貼近身體，背輕的東西時，可以離遠點，即 ④ ；故選C。 （3）細節(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。這篇短文主要對如何正確使用背包使人更舒服更安全給出的幾點建議，故選D。 【點評】此題考查閱讀理解。先閱讀短文，理解短文大意。然后進行審題，弄清題意，帶著問題閱讀短文，從短文的細節(jié)中找出細節(jié)理解問題的答案。對于主旨大意題要根據(jù)文章的中心思想確定。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。ll usually see a little symbol that says 3G or 4G. The G stands for the generation （代） of your mobile network. But the symbols will bee things of the past after 5G networks fully arrive. 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. About 100 times faster than 4G networks, 5G will let people download and upload data（數(shù)據(jù)） faster than ever before. But 5G won39。t just bring faster mobile internet. People can use it for many other things as well. For example, 5G will help to make selfdriving cars safer. Today39。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。t receive instructions in time. With 5G, this lag will be greatly lowered, making the cars safer.5G could also be used to power the internet of things （IoT）, that is, a large online network that connects all things and people. Fast internet speeds will be the key to developing this technology. 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.Beijing.B.Shanghai.C.Shenzhen.（2）What can we infer（推測） according to the passage?. A.5G is widely used in China now.B.5G networks will make our lives more convenient.C.There are no symbols at the top of our phones.（3）The writer uses selfdriving cars as an example to . A.explain how 5G39。s fast speed can be helpfulB.warn about the possible dangers of selfdriving carsC.explain how selfdriving cars work（4）What is IoT according to the passage? A.A robot that can do housework.B.An online store where you can buy anything.C.A large online network that connects things and people.（5）Which sentence is right according to the passage? A.5G will help us buy eggs quickly.B.Robots can help us buy eggs online.C.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：當人們看手機上方的時候，會看到3G或者4G的小符號。G代表手機網絡的代。但是，當5G網絡全面覆蓋時，這些符號將會成為過去時。3月30日，上海市長吳清第一次使用華為Mate X智能手機進行視頻通話，上海成為中國進行第一個測試5G的城市。5G將會在很多方面改善人們的生活。 （1）細節(jié)理解題。根據(jù) Shanghai has also bee the first city in China to start testing 5G networks?？芍?，上海是中國第一個進行5G測試的城市。故選B。 （2） 推理判斷題。根據(jù)About 100 times faster than 4G networks， 5G will let people download and upload data（數(shù)據(jù)） faster than ever before。 But 5G won39。t just bring faster mobile internet。 People can use it for many other things well。可知，5G的速度將會是4G的100倍，人們下載或者上傳數(shù)據(jù)都會快很多。而且，5G不僅僅是在移動網絡上給人們帶來快捷。在其他方面，人們也可以利用5G。由此可以推斷出，5G將會使人們的生活便利很多。故選B。 （3） 推理判斷題。根據(jù)…With 5G， this lag will be greatly lowered， making the cars safer?？芍?G可以大大減少問題延遲，從而使無人駕駛汽車更安全。作者通過這個例子來告訴我們5G的告訴怎樣起作用的。故選A。 （4）詞義猜測題。根據(jù)5G could also be used to power the internet of things（IoT）， that is， a large online network that connects all things and people?？芍?，IoT指的是把所有人和物聯(lián)系起來的一個巨大的在線網絡。故選C。 （5）細節(jié)理解題。根據(jù)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?？芍敱淅餂]有雞蛋時，冰箱可以自動在網上下單買雞蛋。故選C。 【點評】此題考查閱讀理解。客觀信息題可以從文章中直接找到答案。而主觀判斷題考查的是對文章的感情基調等，這類題必須經過對作者的態(tài)度、意圖以及對整篇文章進行深一層的推理等。通過語篇邏輯關系，研究細節(jié)的暗示，推敲作者的態(tài)度，理解文章的寓義。對于詞意猜測題。需要準確無誤地理解上下文，根據(jù)上下文的聯(lián)系進行猜測。找出問題答案。6．閱讀理解 Scrub, the pet cat of Jennifer39。s, was found! It got lost five years ago. Jennifer looked for it everywhere but failed each time. She thought Scrub would never e back. But one day she got a call from an animal shelter（庇護所） and was told they had found Scrub! How did they know Scrub belonged to Jennifer? How did they know Jennifer39。s phone number? All the information was available because of the microchip, a very small puter chip（薄片）. It was placed under Scrub39。s skin many years earlier. The microchip is usually placed under the skin of an animal39。s shoulder to keep its ID number. Once the chip is in place, the pet does not feel it anymore. When lost pets are brought to animal shelters, people there use a special tool to look for the microchip and read the ID number on it, then they39。ll call the microchip pany to match the number to the information of the pet39。s owner. This is how the shelter was able to tell Jennifer that they had found Scrub. Microchips have helped thousands of owners get their lost pets back. In New York, a dog named Roxy was missing for months. Then a woman found her on a busy street in New Jersey. No one knows how the dog got to a different state. However, thanks to her microchip, Roxy was soon returned to her grateful owner. In 2008, a couple got their cat George back after he had disappeared 13 years earlier! When George got lost, the couple tried everything to find him. They visited animal shelters every day for six months, made posters and even offered a $500 reward（酬金）. As years went by, they thought George would never be back till they got the call from an animal shelter. Without the microchip, the cat would never be able to e home again. Microchips can not only work for a pet39。s whole life but help lost pets no matter how far they39。ve been away from home. This is why microchips may be just