Discovering the proper classification for each piece of household waste before throwing it out-and avoiding fines of up to 50，000 yuan---has become as simple as taking a photo thanks to the efforts of a group of young programmers.
   They have applied speech and picture recognition technologies to apps and other smartphone services to guide Shanghai residents through China's first mandatory garbage-separation plan.The rules require every citizen and institution to classify waste into four categories-recyclables，kitchen waste，hazardous waste and residual waste-with a long list of items in each category.Previously，everything went into one dustbin，and the dramatic change has made many Shanghai residents worried.Many residents say they are struggling to master the details quickly.
   To smooth the process and raise public awareness，Shanghai government launched a campaign featuring posters and TV programs introducing garbage-sorting techniques.
   "It has become a lasting topic for my family's mealtime discussions，" 27-year-old Shanghai resident Fang Chengxiang said.He said they used the Internet to find out how to classify waste properly. "I would often Baidu the name if I got confused，" Fang said，referring to China's leading search engine.
   Most of the apps and services，which began springing up last month in app stores，on messaging tool WeChat and mobile payment service Alipay，allow users to type in the name of waste to identify which category it belongs to.
   One of the apps using speech recognition is What Garbage，whose downloads topped 130，000 in the first week after it was released early this month.
   It was designed by zzz studio，a team made up of a programmer，an advertising art director and a visual designer.Since they all have 996 jobs-meaning they work from 9 am to 9 pm six days a week-the app was designed in what little spare time they have.
   Liu Yiyi，23，a member of the studio，said it was designed to help people through the transition（過渡） period，and it especially helps people sort ambiguous items.Actually，Liu Yiyi added，as Chinese become accustomed to rules，people will use the apps less often.

（1）What can we learn about the garbage-separation plan？

D

D

A．The plan has benefited many cities.
B．The plan can only be carried out in Shanghai.
C．The plan initially came out from large cities.
D．Some apps can be used to help carry out the plan.
（2）Why did the government use social media to introduce classifying techniques？

B

B

A．To draw main media's attention
B．To make the plan easier to carry out.
C．To help people master the garbage details.
D．To stress the importance of sorting garbage.
（3）What can we know according to Liu Yiyi？

D

D

A．The transition period will last a long time.
B．These apps can only help sort ambiguous items.
C．Chinese will become accustomed to these apps.
D．Less people will use these apps in the future.
（4）What's the main idea of this text？

C

C

A．Benefits of garbage-separation plan.
B．Significance of garbage-separation plan.
C．Young programmers make garbage-classification easy.
D．Carrying our garbage-classification plan is difficult.