Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: As we all know, people couldn't live without water. Some parts of our bodies are made of water. We depend on clean water to live every day. However, we human beings are polluting water seriously. In some areas of China, people are still in great need of clean water. Dirty water is one of the world's biggest healthy problems. It's harmful to our health. When water from the rain and melting snow runs through roads, it picks up some dangerous chemicals and other things along the way. Many of the rivers are short of protections, so they are easy to be polluted by factories or animals' waste. World Water Day has grown to become one of the important dates since 1993. In 2013, World Water Day shares the topic of Water Cooperation. If everyone tries their best to save and protect the clean water, our living conditions will be much better. ,. Options: A schools B factories or animals' waste C fish D human beings' waste Answer: B factories or animals' waste Question:
++++++++++++++++++++++++++++++++
The answer is:
Many of the rivers are easy to be polluted by _ .

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Do you remember when your grandma told you the story of Snow White? Ah, the happy days of childhood! But did you know that Snow White comes from Germany? It's just one story from the 209 in Grimm's Fairy Tales (<<>> ). The Grimm brothers started to collect fairy tales in 1806. Their first book came out in 1812. Why are German fairy tales so interesting? Maybe it's because they come from a great place famous for its stories - the Black Forest. The Black Forest is in southwest Germany. It's the largest forest in the country - and one of the most beautiful. It's famous for its trees and lovely views, There are valleys and waterfalls there. It's a good place to start a story. Don't forget to bring something back if you visit. People there are good at making clocks, musical instruments and watches. Options: A who wrote the story of Snow White B some things about Black Forest C people should visit Germany D Snow White is a very famous fairy tale. Answer: B some things about Black Forest Question:
++++++++++++++++++++++++++++++++
The answer is:
The story mainly tells us _ .

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Have you ever noticed how busy our roads are becoming? Every year more and more cars are using them. Already in such countries as America, almost every family has a car. Many accidents happen because cars are now made to travel very fast. Also, people waste time and money every day as long lines of cars move slowly into towns and cities. In most big towns it is very hard to find parking spaces. Wide, smooth , straight roads must be built now in place of the old and narrow roads. These roads must not pass through towns and cities. They must not be crossed by other roads. Today such roads are being built in many countries in the world. These roads have at least two lanes , one for slow-moving traffic and the other for fast-moving traffic. These roads do not pass through town and cities; horses and bikes are not allowed on them. Accidents do not usually happen. Cars can travel hundreds of miles without having to stop. But these modem roads often cannot be built in towns and cities. Before a road in a town can be made wider, many buildings have to be pulled down. Some people feel that more car-parks should be built outside a city, then the drivers should leave their cars and catch a bus or take a taxi to their offices. Options: A the old roads B roads of the future C how to build the modem roads D roads in towns and in the country Answer: B roads of the future Question:
++++++++++++++++++++++++++++++++
The answer is:
The passage is mainly about _ .