73．If the three Rs（reduce，reuse and recycle）is a guideline to save the planet，garbage-sorting is where the efforts start.Since May 1，Beijing has started to carry out mandatory garbage-sorting in new efforts to better protect the environment.Under the new regulation，residents are required to classify household waste into four categories：kitchen，recyclable，hazardous and other waste.People who fail to sort their garbage properly can be fined from 50 to 200 yuan，reported Xinhua.
Some residential communities in Beijing have introduced rewards to encourage residents to sort their garbage.According to Xinhua，residents can earn points by classifying their domestic waste correctly and then exchange the points they accumulate for daily necessities such as soap.
Garbage sorting practices have reached over 70 percent of housing estates in 18 cities，including Shanghai，Xiamen and Hangzhou，according to the Ministry of Housing and Urban-Rural Development.Shanghai first enacted a mandatory garbage-sorting regulation in July 2019 and has had a 90 percent compliance（服從）rate among its housing estates.
According to a report by the Ministry of Ecology and Environment，over 90 percent of the public believe that garbage-sorting is important for the protection of the environment.However，garbage-sorting is still a big problem in China.Only 30 percent of participants said they think they are completely sorting their waste，the report noted.According to Xinhua，it's partly because many people lack the willingness to sort their own waste.Also，some previous garbage regulations didn't include fines for people who failed to obey them.
"It's a must to have a legal guarantee to promote garbage sorting，" Mr.Liu，a professor from Tsinghua University，told China Daily，"Aside from China，many countries like Germany，Spain and Britain，also ask people to sort waste into specific categories.In Japan，there is a fixed time for the sorting of each kind of garbage and littering."
（1）What can we learn about the new regulation in Beijing？
A．It hasn't been put into use yet.
B．Residents can sort the garbage as they like.
C．People can get money if they classify their domestic waste correctly.
D．Those who can't sort the garbage as the new rule requires shall be fined.
（2）What's the problem in garbage sorting in China？
A．Most people are unaware of its importance in protecting environment.
B．Some people don't want to take the trouble to sort the garbage.
C．Only residents in big cities can sort the trash correctly.
D．The government doesn't have enough money to support garbage sorting.
（3）What can we infer from Mr.Liu's words？
A．It's difficult to carry out garbage sorting in China.
B．Some laws in garbage-sorting are needed.
C．People in developed countries can better sort the garbage.
D．We should learn from Japan.
（4）What's the best title of the passage？
A．Garbage Sorting，a New Start in China
B．New Regulations in Beijing
C．Argument on Garbage Sorting
D．How to Sort Domestic Garbage
