题目内容：

    “What kind of rubbish are you?”This question might normally cause anger，but in Shanghai it bas brought about weary complaints over the past few months. On July 1st，the city introduced strict rubbish-sorting regulations that are expected to be used as a model for our country. Citizens must divide their waste into four separate categories and put it into specific public bins. They must do so at scheduled times, when monitors are present to ensure that rules are obeyed and to examine the nature of one's rubbish.

Violators could be hit with fines of up to 200 yuan ($29). For repeat violators, the city can add black marks to their credit records, making it harder for them to obtain hank loans or even buy train tickets.

Shanghai authorities are responding to obvious environmental problem. It produces 9 million tons of garbage a year. But like other cities in china, it lacks a recycling system. Instead, it has relied on rubbish pickers to pick out whatever can be reused. This has limits. As people get wealthier, fewer of them want to do such dirty work. The waste, meanwhile, just keeps piling up. China produces 80 billion pairs of one-off chopsticks a year.

Many citizens appear to support the idea of recycling in general but are frustrated by the details. Rubbish must be divided according to whether it is food, recyclable, dry or hazardous（有害的），the distinctions among which can be confusing, though there are apps to help work it out. Some have complained about the rules surrounding food waste. They must put it straight in the required public bin, forcing them to tear open plastic bags and toss（投掷）it by hand, Most annoying are the short periods for throwing trash, typically a couple of hours, morning and evening. Along with the monitors at the bins, this means that people go at around the same time and can keep an eye on what is being thrown out; no one wants to look bad.

1.What's the purpose of Paragraph l?

A.To complain about rubbish dividing.

B.To explain the four categories of the waste.

C.To introduce the rules on waste sorting.

D.To show the goal of rubbish, sorting regulations.

2.What does the underlined word "Violators" in Paragraph 2 refer to?

A.People who don't pay for train tickets. B.People who argue with the monitors.

C.People who obtain bank loans. D.People who are against the regulations.

3.What makes the citizens upset most about the rules?

A.Complex distinction among the four categories of rubbish.

B.Short scheduled time for tossing rubbish.

C.Being observed by monitors when throwing the garbage.

D.Being fined when blamed due to improper behavior.

4.What can be the best title for the text?

A.A Restart of Waste-sorting B.A New Age of Garbage Classification

C.Learning to Classify Rubbish D.Rubbish-sorting Benefits the World