【正文】 n 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(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。根據(jù) s own body weight. （4）此題考查主旨大意。 【點(diǎn)評】此題考查閱讀理解。然后進(jìn)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。4．閱讀材料，然后從各小題所給的四個(gè)選項(xiàng)中選出最佳選項(xiàng)。 Your English teacher has introduced a play to your class. Read the play. Peter, students, 15 years old Grace, student, 14 years old Place: Sunny Parkm so full that I can hardly move.Grace: That39。 It39。 （Peter throws a bit of water on the fire. Then he picks up the ashes （灰燼） with an old newspaper and wants to throw them into the long grass. ）Susie: （Sounding surprised） What are you doing, Peter? That39。 （Benny and Grace e over quickly. They help put out the fire pletely.）Peter: Oh, no. What have I done?Grace: You know that we should do everything carefully, don39。Clean an easyB.Great and interestingD.s d…? A.difficultC.dangerous（3）Which of the following sentences is true? A.Peter39。They have a piic in the morning.D.主要是關(guān)于四個(gè)學(xué)生野餐后，需要清理場地。根據(jù)文中Peter的第一句話How can I always get the dirty and difficult jobs?我怎么能總是得到骯臟和困難的工作？可知，Peter認(rèn)為自己的工作又臟又難（dirty and difficult）。 （2）推理判斷題。這是一件危險(xiǎn)的事情。A： dirty臟的； B： difficult 困難的；C： delicious可口的； D： dangerous危險(xiǎn)的。 （3）正誤判斷題。Peter, students, 15 years old；Grace, student, 14 years ，不符合文章內(nèi)容，故排除A；Peter: Whoops…the newspaper has caught Susie: And the grass.. Benny, Grace, help! Help!（Benny and Grace e over quickly. They help put out the fire pletely）可知由于彼得的粗心引起火災(zāi)，故選項(xiàng)B符合文章內(nèi)容，故選B； Time: One Sunday afternoon in autumn；Time: One Sunday afternoon in autumn；s no excuse for not tidying up, Benny. Come over here and help me pack up the leftover food.綜上所述，故選B。 5．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)。 In 2018, Science magazine asked some young scientists what schools should teach students. Most said students should spend less time memorizing facts and have more space for creative activities. As the Internet grows more powerful, students can access （獲得） knowledge easily. Why should they be required to carry so much of it around in their heads? Researchers have recognized several problems that may happen. For one, human beings have biases （偏見）, and smart machines are likely to increase our biases. Many people believe smart machines are necessarily correct and objective, but machines are trained through a repeated testing and scoring process. In the process, human beings still decide on the correct answers. In a new civilization rich in machine intelligence, we have easy access to smart memory networks where information is stored. But dependency on a network suggests possibilities of being harmed easily. The collapse of any of the networks of relations our wellbeing （健康） depends upon, such as food and energy, would produce terrible results. Without food we get hungry。 We forget old ways to free up time and space for new skills. As long as the older forms of knowledge are stored somewhere in our networks, and can be found when we need them, perhaps they39。Because they go off course in testing and scoring.B.Because we offer them too much information.D.frees us from making efforts to learn new skillsB.misleads us into thinking we already knew the knowledgeD.a sudden failurethe basic ruleC.D.s main purpose in writing this passage? A.To discuss our problems of munication with machines.C.To remind us of the risk of depending on machines to remember.【答案】 （1）B（2）C（3）A（4）D 【解析】【分析】大意：作者主要講的是用機(jī)器記信息可能會產(chǎn)生的不良影響或后果。根據(jù) Many people believe smart machines are necessarily correct and objective, but machines are trained through a repeated testing and scoring process. In the process, human beings still decide on the correct answers. 機(jī)器人的程序是由人類編程的，人類控制它們的訓(xùn)練程序，故選B。根據(jù) This can lead to the mistaken belief—the knowledge we found was part of what we knew all ，故選C。 根據(jù)The collapse of any of the networks of relations our wellbeing （健康） depends upon, produce terrible results. 可知，此處指我們健康所依靠的網(wǎng)絡(luò)中的任何一