【正文】 ng 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。 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。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。故選A?？芍x項B不符合文章內(nèi)容，故排除B； you just hear it more clearly when you39。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。只有選項B，才能揭示文章的大意，故選B。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。 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.Improper use of backpacks.D.①③⑤C.About 6kg.C.The suitable backpack material that you should choose.C.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。Make sure the pack fits properly and its size is suitable for the wearer39。根據(jù) （4）此題考查主旨大意。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。 However, smartphone technology can be a doubleedged sword. On the one hand, it sends us unlimited amounts of information. On the other hand, using a smartphone may bee an addiction.Most young people can39。has a brilliant futureB.It can help reduce loneliness.B.s preferred by young people feeling lonely.D.t that important to us.B.There are ways to deal with Smartphone use addiction.（5）Which of the followings is True? A.There were nearly 2. 4 billion people using smartphones in the world in 2017.D.另一方面，使用智能手機可能會成為一種癮。可知，智能手機的使用已經(jīng)變得非常普遍。另一方面，使用智能手機可能會成為一種癮。根據(jù)They found that students who used their phones the most reported higher levels of feeling lonelydepressed and anxious他們發(fā)現(xiàn)使用手機的學生報告說，他們感到孤獨、沮喪和焦慮的程度更高。But the researchers say that we can limit our brains to be less addicted to our phones and pute但是研究人員說，我們可以限制我們的大腦對手機和電腦的上癮程度。結(jié)合選項A，我們可以用智能手機來對付孤獨。綜上所述，可知第三個符合文章內(nèi)容。推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案，切忌胡亂猜測，一定要做到有理有據(jù)。 Many cars in advertisements are red, blue or green but almost 75 percent of new cars sold are black, white, silver or grey.t show dirt such as grey. That means the owners can wash their cars less, saving money. Besides, some areas that are short of water do not allow people to wash their cars often.cars in advertisements. A.B.C.D.can wash their cars lessB.D.cheaperD.make up 11% of the cars soldwere less popular than blue cars in the past（5）In the future, we canbuy cars in all colorsD.根據(jù)Many cars in advertisements are red,可知，廣告里的車的顏色是經(jīng)常是紅色的，故選C。 （3）細節(jié)題。根據(jù)A survey shows people prefer the car colors that don39。s paint color anytime【答案】 （1）C（2）A（3）A（4）C（5）D 【解析】【分析】大意：本文講述車的顏色，以及使用某些顏色的原因。B.. A.are hard to find all the timeC. B.safert allow washing cars（3）According to the passage, white cars lookt need to wash carsC. s paint color anytime.（1）You can often see At present, every year about 11 percent of cars sold are red and 8 percent are blue. Green has bee less popular. In the mid 1990s, green was the most popular color in many places of the world. But today, green cars are hard to find. 【點評】考查閱讀理解。C、2017年世界上有近24億人使用智能手機。故選D。故選D。故選C。 （2）句意猜測題。 billion people around the world used a smartphone in 2017 By the end of 2019more than a third of the global population will be using a ，全球近24億人使用智能手機。t know when and where you should answer the s.【答案】 （1）A（2）C（3）D（4）D（5）C 【解析】【分析】【文章大意】本文講述了智能手機的利與弊。An addiction can39。We shouldn39。 emotional state in many ways.（4）What does the last paragraph mainly want to tell us? A.s more popular with students.C.has both advantages and disadvantagesD.Smartphones make our life more colorful and convenient.D.t need to answer them as soon as you get them. They also suggest putting limits on the time you spend on social media. If you want to catch up with friends on Facebook, set aside a small amount of time to it. You should focus on important tasks and do not allow technology to disturb you.（1）What can we infer from Paragraph 1? A.s desire to make more money that is to blame for the technology addiction. The researchers warm that workers in the technology industry know how to control our brains and turn us into addicts. And these connections form slowly over time. Also, addiction to social media may affect our emotional state. The two professors asked 135 university students about their habit of smartphone use and their feelings. They found that students who used their phones the most reported higher levels of feeling lonely, depressed and anxious.7．閱讀理解 【點評】此題考查閱讀理解。s own body weight. 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。 （2）細節(jié)判斷題。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。About 15kg.（4）What is the passage mainly about? A.②③⑤（3）If a boy weighs 40kg, how heavy should his filled backpack be at most? A.s body.③Make sure the backpack contains only what is needed for that day④Pack heaviest objects close to the body,