题目内容

【题目】

A.such as B.usually C.for example D.need to E.easier

Buying dried and canned food online is 1. A person can buy this kind of food on the Internet and then buy fruits and vegetables at a store or a market.

Now people can also buy food through supermarket websites. There people can find most of the things that supermarkets 2 sell. Other food websites sell different types of food. Some sell food from one part of the world such as Asia. Others sell food that is hard to find in supermarkets. There are also websites that sell sweet foods 3 cakes and candies.

The food is usually delivered by the next day or even on the same day. People still 4 be careful, though. They must check to see if the food is fresh when they get it. It is a good idea for people to find out how far away the food is being delivered from. It is also a problem if the company does not use refrigeration (冷藏) when they deliver food that should be kept cold. If traveling long distances in the summer to deliver the goods, this is important.

【答案】

1E

2B

3A

4D

【解析】

这篇短文主要讲述了人们在网上购买食品需要注意的事项。

1句意:网上购买干粮和罐头食品更容易。

根据下文A person can buy this kind of food on the Internet and then buy fruits and vegetables at a store or a market. 可知上文是说网上购物更容易,easy的比较级是easier,意思是“更容易,根据句意,故选E

2句意:在那里人们可以找到超市通常出售的大部分东西。

根据上文There people can find most of the things可知这里是说超市通常出售的。usually副词,通常。根据句意,故选B

3句意:还有一些网站出售甜食,如蛋糕和糖果。

根据下文cakes and candies. 可知这里是说举例子。such as表示例如。根据句意,故选A

4句意:不过,人们仍然需要小心。

这里是说需要做某事;need to do sth.表示需要做某事。根据句意,故选D

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【题目】 When a leafy plant is under attack, it doesn’t sit quietly. Back in 1983,two scientists,Jack Schultz and Ian Baldwin,reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm.What the plants pump through the air is a mixture of chemicals which are called VOCs for short.

Scientists have found that all kinds of plants give out VOCs when being attacked .It’s a plant’s way of crying out.But is anyone listeningExactly.Because we can watch the neighbours react.

Some plants release smelly chemicals to keep insects away.But others do double duty .They pump out perfumes designed to attract different insects who are natural enemies to the attackers.Once they arrive,the tables are turned .The attacker who was lunching now becomes lunch.

In study after study,it appears that these chemical conversations help the neighbors .The damage is usually more serious on the first plant,but the neighbors ,relatively speaking ,stay safer because they heard the alarm and knew what to do.

Does this mean that plants talk to each other Scientists don’t know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear” the cry. So information was exchanged, but it wasn’t a true communication.

Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate(亲密的) than the world we can see and hear. Our senses are weak. The world is .

1Does a leafy plant sit quietly when it is under attack?

2What does a plant do when it is under attack?

3How can scientists know that there is someone listening to the crying?

4What does the author mean by “the tables are turned” in paragraphs 3?

5From the scientists' studies, can plants protect themselves against insects or really talk to each other?

6What can be filled in the blank at end of the passage?

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