题目内容：

    At 9 pm, Li Zhigang was sitting in front of his fruit shop on a busy street in central Shanghai’s Xujiahui area, removing the thin plastic film from rotten pears and oranges. “This is so much trouble!” he complained while throwing the plastic into one garbage can and the fruit into another. In the past, Li simply threw away what could not be sold with the packaging on, but from July 1, 2019, he could be fined up to 200 yuan for doing so.

Like Li, many of the tens of millions of residents in Shanghai have been complaining recently that the introduction of compulsory household garbage sorting is making life difficult, but at the same time have been having to learn to do it.

Calls for garbage sorting have brought little progress in China in the past decade, but Shanghai is leading a fresh start for the world’s second-largest waste producer. “If we say China is now classifying its waste, then it’s Shanghai that is really doing it,” said Chen Liwen, an environmentalist who has devoted herself to waste classification for the past decade. “It’s starting late, compared with the US or Japan, but if it’s successful in such a big city with such a huge population, it will mean a lot for the world,” she said. While the measures force a change of habits for most people, they bring opportunities for some. Du Huanzheng, director of the Recycling Economy Institute at Tongji University, said waste sorting was important for China’s recycling industry. “Without proper classification, a lot of garbage that can be recycled is burned, and that’s a pity,” he said. “After being classified, things suitable to be stored and transported can now be recycled.” Besides, prices of small sortable garbage cans for home use have increased on e-commerce (电子商务) platforms, while garbage can makers are also developing smart models in response to new needs. What’s more, garbage sorting is also an important part of a country’s soft power. “For China, it is an opportunity to improve its international reputation. However, it is a long process that requires effort from government, enterprises and individuals (个人),” Du said.

1.What do the underlined words “doing so” in Paragraph 1 refer to?

A.Packaging fruit with plastic film.

B.Selling rotten fruit to customers.

C.Throwing rotten fruit into a garbage can.

D.Throwing fruit and its packaging into the same garbage can.

2.What does the author want to show by writing Paragraph 2?

A.The new garbage sorting rules in Shanghai are strict.

B.Garbage sorting puts Shanghai residents into trouble.

C.It is not easy to learn how to sort garbage.

D.It’s necessary to sort garbage in Shanghai.

3.What is Chen Liwen’s attitude towards garbage sorting in China?

A.Hopeful. B.Doubtful.

C.Uninterested. D.Worried.

4.Which of the following is mentioned as a benefit of garbage sorting?

A.It helps reduce the burden of individuals.

B.It makes smart garbage cans affordable.

C.It helps improve China’s hard power.

D.It avoids recyclable things being burned.