【文章內(nèi)容簡介】 back into the supernova, creating a black hole. This fallback formation is theoretically possible but scientists have never been able to prove or observe it. If this is how LB1 formed, then we may have direct evidence for this process for the first time, the study said. There are several types of black holes and stellar black holes like LB1 are on the smaller side, according to NASA. Supermassive black holes are much bigger—they can be billions of times the mass of our sun, Scientists believe supermassive black holes may be connected to the formation of galaxies, as they often exist at the center of the mass star stems but it is still not clear exactly how, or which form first.（1）Why does the writer write the article? report the great achievement Chinese scientists have made in black hole theory, inform the readers of the basic knowledge about the black hole, share with the readers the new development of the black hole discovery, demonstrate the significance of discovering new black holes for science.（2）Which of the following about LB1 is true to the passage? is the biggest black hole ever discovered. lost only a small part of its mass through explosion. couldn39。t have been formed from the collapse of one star. discovery may lead to some breakthrough in the fallback formation theory.（3）Which of the following is right according to the passage? the sun in our galaxy dies some of its mass will be taken away by stellar winds. massive supernova will be formed and then exploded if the sun in our galaxy dies.C.The Milky Way was formed after a supermassive black hole collapsed and exploded. the Milky Way dies, a supermassive black hole will be formed after its death.【答案】 （1）C（2）D（3）A 【解析】【分析】本文是一篇新聞報(bào)道，報(bào)道了科學(xué)家們已經(jīng)發(fā)現(xiàn)了一個“巨型黑洞”，其質(zhì)量之大，在理論上是不應(yīng)該存在。但這個理論現(xiàn)在已經(jīng)被新中國科學(xué)家發(fā)現(xiàn)的黑洞LB1所推翻?？茖W(xué)家們現(xiàn)在正絞盡腦汁研究LB1是如何變得如此巨大的，并介紹了幾種可能性的理論。 （1）考查推理判斷。根據(jù)第一段中的“Scientists have discovered a ‘monster black hole’ so massive that, in theory, it shouldn39。t exist.”可知，科學(xué)家們已經(jīng)發(fā)現(xiàn)了一個“巨型黑洞”，其質(zhì)量之大，在理論上是不應(yīng)該存在；再根據(jù)第三段“This theory has now been toppled by LB1, the newly discovered black hole. Located about light years away, it has a mass 70 times greater than our sun, according to a press release from the Chinese Academy of Sciences.”可知，但這個理論現(xiàn)在已經(jīng)被新中國科學(xué)家發(fā)現(xiàn)的黑洞LB1所推翻。根據(jù)中國科學(xué)院的一份新聞稿，它位于15000光年之外，質(zhì)量是太陽的70倍。所以判斷出作者寫這篇文章的目的是與讀者分享黑洞發(fā)現(xiàn)的新進(jìn)展，故選C。 （2）考查細(xì)節(jié)理解。根據(jù)倒數(shù)第三段中的“If this is how LB1 formed, then we may have‘direct evidence for this process’ for the first time.”可知，如果這就是LB1的形成過程，那么我們可能首次有了“這一過程的直接證據(jù)”。所以LB1這一發(fā)現(xiàn)可能會給“后援形成理論”帶來一些突破。故選D。 （3）考查細(xì)節(jié)理解。根據(jù)第二段中的“because 8S these stars die, they lose most of their mass through explosions that expel matter and gas swept away by stellar winds.”可知，因?yàn)檫@些恒星會死亡，它們大部分質(zhì)量因爆炸而損失，恒星風(fēng)會把爆炸釋放出來的物質(zhì)和氣體吹走。所以如果我們星系中的太陽死亡，它的一部分質(zhì)量會被恒星風(fēng)吹走。故選A。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個題型的考查，是一篇新聞報(bào)道，考生需要準(zhǔn)確掌握細(xì)節(jié)信息，并根據(jù)上下文進(jìn)行邏輯推理，從而選出正確答案。5．閱讀理解 A bunch of strangers showed up at the gym in the early morning of the last Sunday of April. A few athletes were already stretching their arms, but most of us could barely focus. As I was burning off last night39。s wrong decision—a big meal, I spotted a poster about a gym39。s 21day workout challenge, and I immediately signed up. I always wanted to train for a marathon, so I considered this as my warmup. Besides, I needed to stop being lazy and this was my chance to make a change. It was easy to promise on paper, but three weeks of remended exercise routines and diet restrictions wouldn39。t be easy. I stuck to working out 30 minutes a day, and I didn39。t disturb my normal routine. Instead, I had to be faced with the tough work of being more creative in my spare time, thus breaking some bad habits. Overing weaknesses with willpower was my goal for the next part of the journey. But the difficult part about making a challenge is realizing that wanting and doing are two very different things. Just like a career, you have to physically work for it rather than just wait for it to happen. But that39。s hard. Throughout the 21 days, I often told myself that the challenge was meaningless and tried to sabotage myself from exercising. However, finally I overcame that negative thought and kept working out. At the end of the challenge, I learned something even more important: Feeling the results is better than seeing them. I had fewer headaches and more energy, and was simply happier. I even felt a little smarter as I researched which foods were better for my body, and learned how to make healthier meals. I felt a sense of acplishment, too, because even though I wanted to give up dozens of times, I didn39。t. I felt my waist got smaller and my arms got stronger, and I no longer felt guilty after having a piece of cake or a drink.（1）What was the author39。s wrong decision? A.Going to the gym early.B.Training for a marathon.C.Eating a lot the previous night.D.Stopping being lazy for a change.（2）What is paragraph 2 mainly about? of the author39。s bad habits. ways of the author39。s killing his spare time. importance of sticking to the normal daily routine. difficulty of the author39。s keeping on with the workout plan.（3）What does the underlined word sabotage in paragraph 3 probably mean? ....（4）What did the author learn from the workout challenge? healthy food is more important than exercising. a challenge could bring good feelings to him.39。s more important to see what he likes than just feel it. was no need to feel guilty about things he disliked to do.【答案】 （1）C（2）D（3）A（4）B 【解析】【分析】本文是一篇記敘文，一張宣傳健身鍛煉的海報(bào)讓作者開始馬拉松的熱身。雖然三個星期的鍛煉計(jì)劃和飲食限制是很難堅(jiān)持的，但是作者堅(jiān)持每天鍛煉。最后，鍛煉給作者帶來了好心情。 （1）考查細(xì)節(jié)理解。根據(jù)第一段中的“As I was burning off last night39。s wrong decision—a big meal, I spotted a poster about a gym39。s 21day workout challenge”可知，昨晚我做了一個錯誤的決定：吃了一頓大餐。因此作者的錯誤決定是前一天晚上吃得很多。故選C。 （2）考查段落大意。根據(jù)第二段中的“It was easy to promise on paper, but three weeks of remended exercise routines and diet restrictions wouldn39。t be easy.”可知，將承諾寫在紙上是很容易的，但是堅(jiān)持三個星期的鍛煉和飲食限制并不容易。因此該段的主要內(nèi)容是作者堅(jiān)持鍛煉計(jì)劃的困難。故選D。 （3）考查詞義猜測。根據(jù)第三段中的“Throughout the 21 days, I often told myself that the challenge was meaningless and tried to sabotage myself from exercising.”中的and前后兩句是承接關(guān)系，and前面說的是“在這21天里，我經(jīng)常告訴自己，挑戰(zhàn)是沒有意義的。” 由“Howe