2020版高考英语大一轮复习Unit2Wishyouwerehere题型组合训练三(A)牛津译林版必修2

If the cells in the leaves become dry, the connections between the cells will be weakened and the leaves will break off.

Although there are different explanations about autumn colors, it has really given them a deeper concern for this time of year. “People sometimes say that science makes the world less interesting by just explaining things away,” one famous biologist said.“But with autumn leaves, the more you know about them, the more amazed you will be.” 8.According to Dr. Hamilton, there is a connection between . A.the size of leaves and the survival of insects B.the size of leaves and the behavior of insects C.the size of leaves and the quality of insects D.the size of leaves and the number of insects

9.Dr. Hoch and his team give the explanation that . A.climate has an influence on the color of the leaves B.sun damage and frost injury drive the insects away C.the color of autumn leaves has a protective function D.autumn colors bring great destruction to the leaves

10.The underlined phrase “ward off” in Paragraph 2 probably means“ ”. A.catch C.ignore

B.attract

D.prevent

11.Which of the following can be the best title for the passage? A.The evolution of colorful leaves B.The secret to autumn leaves’ changes C.The charming autumn colors

D.The role of leaves’ being protection 答案

[语篇解读] 秋天到了,叶子成了金黄色。在我们眼中这是美丽的秋景,可是科学家们却在研究叶子变成黄色是为了什么。秋天的叶子里藏着什么秘密?

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8.D 推理判断题。根据第二段中In the autumn, insects choose trees where they will lay eggs. When the larvae(幼虫)come out the next spring, they feed on the trees, often with a result of destruction of the trees.可知幼虫以树叶为食,所以树叶的大小和昆虫的数量有关系。故选D项。 9.C 细节理解题。根据倒数第二段中According to Dr. Hoch and his team, autumn colors might be able to protect the leaves from sun damage or frost(冰冻)injury—in other words, they actually act as a sunscreen to avoid the destruction of the leaves.可知秋天的树叶有保护作用,金黄色保护叶子免受伤害,故选C项。

10.D 词义猜测题。根据第二段画线词前一句When the larvae(幼虫)come out the next spring, they feed on the trees, often with a result of destruction of the trees.和后一句They could have strong defenses by letting egg-laying insects know what was in store for their eggs.可知画线词的意思是“阻止”,故选D。

11.B 主旨大意题。根据第一段第一句As trees across the northern areas turn gold and deep red, you can find autumn colors in parks and woodlands, in the cities, countryside, and mountains.和最后一段中 “But with autumn leaves, the more you know about them, the more amazed you will be.”可知本文叙述的是秋天树叶变化的秘密。故选B项。

D

If you’ve ever had to chop an onion, you probably know that it’s one of the most annoying cooking experiences. It just fills your eyes with tears. Scientists and farmers have been working on a solution to this problem for decades, and they’ve apparently come up with a tearless onion.

Called the “Sunion”, this new vegetable is the result of a natural cross-breeding program that’s been going on farms in Nevada and Washington since the 1980s. It’s supposedly a sweet, mild-tasting onion that doesn’t leave that strong, pungent aftertaste, but what really sets it apart from most other onion varieties is that it doesn’t cause teary eyes when it’s chopped.

When you cut into a normal onion, it releases a compound called lachrymatory-factor synthase, and when that hits your eyes, your body produces tears. Now, the interesting thing about regular onions is that the amounts of lachrymatory-factor synthase increase the longer the vegetables are stored, so the older they are, the more you will cry. In Sunions, on the other hand, the levels of that annoying compound drop as time goes by, until it no longer has any effect on your eyes when you cut it.

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That’s what Sunion growers are claiming anyway, but reports from those lucky enough to have tried them seem to confirm these claims. The Huffington Post had three of its reporters chop some Sunions, and apparently, none of them shed a single tear. According to the Washington Post, they don’t have the pungency of regular onions and are so sweet that you can eat them “like popcorn”.

So the good news is that tearless onions are now a real thing. The bad news is that they are currently only grown in Washington and Nevada, and even though they are sold nationwide, they are still in relatively short supply. The first Sunion batches hit the shelves of grocery stores in December, but we’ll probably start seeing them in most grocery shops and supermarkets in the next few years, as more people learn about them. 12.What is special about the Sunion? A.It’s easily chopped.

B.It’s sweet and tastes strong. C.It’s tearless and mild.

D.It’s grown nationwide in the USA.

13.How does the author introduce the Sunion in Paragraph 3? A.By comparison.

B.By telling a story. D.By asking questions.

C.By giving examples.

14.What does the underlined word “pungency” in Paragraph 4 mean? A.Round shape.

B.Strong smell.

D.Medical function.

C.Special character.

15.What can we conclude from the last paragraph? A.The Sunion has been largely on the market. B.The Sunion is still on trial at present. C.The Sunion will soon be grown worldwide.

D.The author is confident about the future of the Sunion. 答案

[语篇解读] 有过切洋葱经历的人一定会印象深刻:两眼泪水。美国两个州研究出了一种新型的洋葱,不会让人流泪而且还可以像吃玉米花那样吃它。

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12.C 细节理解题。根据文章第一段最后一句中的they’ve apparently come up with a tearless onion及第二段中It’s supposedly a sweet, mild-tasting onion that doesn’t leave that strong, pungent aftertaste, but what really sets it apart from most other onion varieties is that it doesn’t cause teary eyes when it’s chopped.可知这种洋葱不会让人流眼泪且气味不浓。故选C项。 13.A 推理判断题。根据文章第三段可知,作者用普通洋葱与新型洋葱进行比较,故作者是运用了比较法。故选A项。

14.B 词义猜测题。根据其后半句are so sweet that you can eat them “like popcorn”可以猜测出pungency是“刺激性气味”之意。故选B项。

15.D 推理判断题。根据文章最后一段中The first Sunion batches hit the shelves of grocery stores in December,but we’ll probably start seeing them in most grocery shops and supermarkets in the next few years,as more people learn about them.可知作者对Sunion的未来很有信心。故选D。

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