tobacco 烟草

petunia 矮牵牛花

pushes back 向后推延

origins 起源，由来

evolved 进化

flourished 蓬勃发展，越来越茂盛

测验 请听报道并回答下列问题。

1. Where was the fossil discovered?

2. The fossilised plant belongs to which plant family?

3. True or false? The discovery of this fossil fruit shows the origin of this plant family is more recent than previously thought.

4. Which word in the text means 'very important or extremely useful'?

答案 1. Where was the fossil discovered?

South America.

2. The fossilised plant belongs to which plant family?

It belongs to a plant family called nightshade, which has over 2000 different species.

3. True or false? The discovery of this fossil fruit shows the origin of this plant family is more recent than previously thought.

False. According to the text, the discovery of the fossil fruit shows the origin of this plant family is much older than previously thought, by tens of millions of years.

4. Which word in the text means 'very important or extremely useful'?

Valuable.

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