Question

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Palm oil(棕榈油) is the most widely used vegetable oil worldwide．It’s found in a wide variety of products from of vitamins to chocolate and bread．1. The former makes it easy to spread，while the latter makes it good for our body．

But the oil’s popularity comes at a high price．2. As a result，thousands of acres of rainforests in Indonesia，the world’s biggest palm oil producers，are being destroyed to make room for them．

With half of the world’s palm oil coming from Indonesia，orangutans(猩猩) have suffered a lot．3. What’s worse，in 2015，wildfires endangered one-third of the remaining orangutans．Palm oil farms have also threatened tigers and elephants and caused water and air pollution．

4. However，it’s not easy given that no other natural vegetable oil has both of its qualities．Now，scientists are creating a new oil to replace it by using food waste and M．pulcherrima，a yeast(酵母) that grows on leaves，fruits and flowers．5. Besides, the yeast can be widely produced in any weather．The scientists say their biggest challenge was to find a cheap way to change the sugars in the food waste to a form that the yeast can take in easily．The team is now trying to test if they can produce the oil at a lower cost．

A．Palm trees need lots of land to grow．

B．The easiest solution is to stop using palm oil so widely．

C．The palm oil is so expensive that many families can’t afford it．

D．In the last 20 years，over 80% of their habitat has been destroyed．

E．There are many things we can do to protect the endangered wild animals．

F．The oil is popular because it has a high melting point and contains healthy fats．

G．It eats the sugars from the waste and turns it into thick oil that has similar qualities to palm oil．

Answer

1.F

2.A

3.D

4.B

5.G

【解析】文章讲述棕榈油的广泛使用所带来的环境问题以及科学家对此的解决办法。

1.考查对上下文语境的理解。空前句意：它在各种各样的产品中被发现，从维生素到巧克力和面包。空后句意：前者使它容易扩散，而后者则对我们的身体有益。故F（这种油很受欢迎，因为它有高的熔点并含有健康的脂肪。）承接上下文，The oil is popular呼应上一句，a high melting point对应easy to spread，healthy fats对应good for our body，故选F。

2.考查对上下文语境的理解。空前句意：但是棕榈油的流行代价高昂。空后句意：结果，印度尼西亚数千英亩的热带雨林为了给它们腾出空间正在被破坏。故这里A（棕榈树需要很多的生长地。）符合上下文，故选A。

3.考查对上下文语境的理解。空前句意：因为世界上一般的棕榈油来自于印度尼西亚，猩猩们遭了很多罪。空后句意：更糟糕的是，在2015年，野火使得剩余的三分之一的猩猩处在危险中。故这里D（在过去的20年里，超过80%的大猩猩栖息地已经被破坏。）符合上下文，故选D。

4.考查对上下文语境的理解。空后句意：但是，这是不容易的，因为没有其他天然植物油有它的两种好品质。故这里B（最简单的解决方法就是停止广泛使用棕榈油。）符合上下文，故选B。

5.考查对上下文语境的理解。空前句意：现在，科学家们正在使用食物垃圾和M．pulcherrima（一种生长在树叶上的酵母）创造一种新油来取代它。空后句意：此外，这种酵母可以在任何天气被广泛的生产。故这里G（它从食物垃圾中摄取糖，并把它转换成与棕榈油有相似品质的稠油。）符合上下文，故选G。