【正文】 ts unique smell? A.Onions nearby.B.Two gene copies.C.Rotten ingredients in it.D.Volatile sulfur pounds.（2）What does the underlined word “evolved” in Paragraph 5 probably mean? A.Developed.B.Escaped.C.Predicted.D.Tolerated.（3）What can we infer from the text? A.No birds enjoy eating durian.B.Durian can be planted all over the world.C.Some of durian species can not be eaten.D.Durian has no relationship with the cacao tree.（4）What39。s the best title for the text? A.What39。s Durian?B.The Influence of the SmellC.The Distribution of DurianD.The Mystery of the Unpleasant Smell of Durian【答案】（1）D（2）A（3）C（4）D 【解析】【分析】本文是一篇說(shuō)明文，新加坡的研究者找出導(dǎo)致水果有難聞氣味的原因就是水果中含有的揮發(fā)性硫化合物非?；钴S，這種氣味對(duì)于野外生存榴蓮來(lái)說(shuō)有利于吸引動(dòng)物來(lái)吃這種水果，同時(shí)傳播種子。(1)考查細(xì)節(jié)理解。根據(jù)第二段中的“so researchers decided to map the genome of the fruit, and find the gene that controlled it. A group of genes, volatile sulfur pounds (含硫化合物), became very active in the fruit, and they were found responsible for resulting in the unpleasant smell.”可知，研究人員找到一組基因——揮發(fā)性硫化合物（SouthType），在水果中非?；钴S，發(fā)現(xiàn)是它們導(dǎo)致了這種難聞的氣味。故選D。(2)考查詞義猜測(cè)。根據(jù)倒數(shù)第二段內(nèi)容可知，研究者畫出了榴蓮的基因圖。通過基因圖，發(fā)現(xiàn)了這種水果的基因龐大，有46000條基因。在這些基因的幫助下，他們了解了榴蓮的基因如何演變的，并發(fā)現(xiàn)榴蓮與可可樹有關(guān)。A項(xiàng)develop“使進(jìn)化”，與劃線詞 evolved 是同義詞。故選A。(3)考查推理判斷。根據(jù)最后一段中的“not all durian species are edible, and some of them may even cause to our health,”可知，并不是所有的榴蓮都是能吃的，有些榴蓮是不可以吃的。由此可推斷出選C。(4)考查主旨大意。文章說(shuō)榴蓮可能是世界上最臭的水果，但沒有人知道原因。新加坡的研究者決定來(lái)查明原因。最后通過繪制的榴蓮基因圖發(fā)現(xiàn)了它難聞氣味的原因。由此可知，本文最好的題目應(yīng)該是“榴蓮難聞之謎”最為適合，故選D?！军c(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解，推理判斷，詞義猜測(cè)和主旨大意四個(gè)題型的考查，是一篇科普類閱讀，要求考生在捕捉細(xì)節(jié)信息的基礎(chǔ)上，進(jìn)一步根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。8．閱讀理解 With fuel costs rising and airlines finding more fees to impose on travelers every day, airfare isn39。t getting any cheaper. Since you can39。t drive to all your dream destinations, flying is the only way to go sometimes and, undeniably, the fastest. Luckily, there are plenty of ways to find the most affordable fares and also avoid paying as many extra charges as possible when you plan ahead. Getting the best fare. Airlines put out their fare sales on Tuesday morning, making this day the best day to book a flight for less. Fly during the least popular times. Tuesday, Wednesday and Saturday are the slowest days to fly, which means cheaper deals than the rest of the week. You can also find reduced rates on early morning flights, since many people don39。t like to get up before the sun to get to the airport. Earlier boarding times can also considerably cut down your chances of getting bumped on an overbooked flight or delayed because of other delayed flights or mechanical issues. Choose your seat later. Some airlines charge you to pick your seat when you book online, adding even more to the bottom line of your ticket cost. If you show up early on your travel day, you can still get suitable seats. Some of the best seats get held back until flight day, unless others are willing to pay extra for them ahead of time, so you still have the chance at one of those. Fly on holidays. You already know that summer is the most expensive time to fly, and even though most other times are more affordable, the days surrounding holidays can be crazy. Save big if you39。re willing to travel on major holidays, such as Thanksgiving and Christmas. Don39。t wait until the lastminute to book. Many travelers don39。t know that there39。s a sweet spot for booking and getting the best price on your tickets. Book too early or too late and you could end up paying more than you need to. The best time to book is between three months and six weeks from when you want to travel. Avoiding extra fees Airlines will charge for just about anything these days. Some have even toyed around with charging customers for using the restroom. All those extra fees can certainly add up, but there39。s no reason to pay them if you don39。t have to. Here are some tips to keep money in your wallet once you get to the airport. Avoid the upgrade it39。s not necessary. Sometimes upgrades are free, but mostly you will be charged for seeking a lastminute bump to first class, and the cost can be hefty. Fly carryon only. Baggage fees vary wildly, but almost all airlines charge them and charge big. Why pay for your clothes to fly with you? If everyone in your travel party checks a bag, your bill can be astronomical before you ever even get to your destination. It39。s easy to reduce the amount of stuff you pack: Make sure all your clothing coordinates, so you can take less and still make more outfit binations, take only two pair of shoes, plan to do a bit of laundry on your trip and bring only travelsized toiletries. Pack your own snacks. Unless you39。re flying internationally, it39。s rare your flight es with a free meal. Snacks on the plane are not cheap and almost never healthy. Don39。t rely on what39。s on the small menu and instead tuck some of your own snacks — granola bars, homemade muffins, fruit and trail mix all make fantastic travel foods — into your bag and eat a lot better, and cheaper, than other passengers. Do you have a tried and true method of getting the best deal on your flights? Let us know.（1）Tuesday is the best to book a ticket at a lower cost for ________.A.fewer people travel on Tuesday.B.the flights are slower than usual.C.fare sales