We humans live in different parts of the world, but we have the same "mother". She gives us everything we need in our daily life. She is our Mother Earth. April 22 is Earth Day. The theme of this year is "Green Cities". A green city is a healthy and pleasant place for people to live, according to the United Nations. A green city can get its energy from renewable sources like solar and wind power. Also, it is connected by clean public transportation. Moreover, a green city is made up of facilities that can save energy and reduce waste. Around the world, many cities and countries have done well to build themselves in a green way. Chicago is well known for its green roof program. These roofs are covered with plants. The plants get a great amount of rainwater. Later, the water evaporates to help make the air cool and clean. So far, there are about 360 green roofs in Chicago, according to the US Environmental Protection Agency. Curitiba, Brazil, has great transportation. It opened the world's first bus rapid transit (BRT) system in 1974. BRT runs on special lanes. This makes sure that buses are on time even in traffic jams. With the help of BRT, the city has the lowest level of air pollution in Brazil. Today, many other countries have copied BRT, including China and Mexico. Singapore is home to the first zero-energy building in Southeast Asia. Zero energy means a building is able to create more energy than it uses. Zero-energy buildings work with solar panels mainly on roofs. These panels can make electricity which powers the buildings. By 2030, Singapore plans to build 80 percent of its buildings like this. The passage is mainly developed by _ . A) giving examples B) explaining reasons C) listing suggestions D) showing different opinions
A
The hottest place in the world is the Sahara Desert in Africa. But there are deserts in many other places: in America, in Asia and in Australia. In 1917 the temperature in Death Valley, in the United States, was over 48degC every day for six weeks. That's very hot! But deserts are not always hot. After dark, deserts are very cold. Not many animals and plants can live in a desert, because it doesn't rain very often. But one animal likes the desert -- the camel. It has big feet to walk on the sand. It can live for a long time without water. Sometimes it doesn't drink anything for weeks -- so it gets very thirsty! When it finds water it can drink 100 liters at a time. What's the weather like in a desert? A) Always hot. B) Always cold C) Warm and wind D) Hot in the daytime, cold in the night
D
Q: Food wasting is often seen in China. It's reported that food waste has produced 70% of the country's increasing rubbish. Especially in restaurants, plenty of food is wasted every day. Huge food waste is usually seen in wedding banquets , birthday banquets and business meals. However, when many people waste food, there is still a large number of people who do not have enough food to eat. Luckily, when dining out is part of everyday life, more and more people have realized packing up the leftovers when dinning might be the right thing to do. Now here is some advice about how. When packing leftovers, take staple foods such as steamed bread. However, leftovers of cold dishes should not be packed up, because the cold dishes can not be heated after being brought home and may go bad and cause illness. Also, leftovers should be kept in the right way after being brought home. Food should be kept at temperatures below 10 degC or higher than 70 degC.But if the packed food is put under room temperatures, they should be eaten within four hours. Packing leftovers in the right way is important, but it's more important to know how to order the right number of dishes. Don't be afraid of losing face by ordering less. After all, food doesn't come easily. After being brought home, leftovers could be kept _ . A) at the temperature of 2degC B) at the temperature of 20degC C) at the temperature of 30degC D) at the temperature of 50degC
A: A
Question: Buckingham Palace is in London, England. Buckingham Palace is famous because Queen Elizabeth of England lives there. She became queen in 1952. Buckingham Palace is a big and beautiful building. Queen Elizabeth and her family live on the second floor of the palace. The queen also has her office at the palace. Queen Elizabeth often asks important people to eat dinner at the palace. She invites 9,000 people to each party! Buckingham Palace is like a small town. It has a police station, a hospital, two post offices, a movie theatre, a swimming pool, two sports clubs, a garden and a lake. The palace has about six hundred rooms. About four hundred people work there. Two people have very _ jobs. They take care of the clocks. There are 300 clocks in Buckingham Palace. Queen Elizabeth's day starts at 7:00 in the morning. Seven people take care of her. One person prepares her bath, and another person prepares her clothes. Another person takes care of her dogs. The queen loves dogs. It's very interesting to have dinner at Buckingham Palace. You have to follow rules. Queen Elizabeth starts to eat first, and then everybody eats. When the queen finishes eating, everybody finishes eating. You can't leave the table during dinner. People visit the rooms in Buckingham Palace in August and September. There are wonderful things to see. Don't forget that Queen Elizabeth is one of the richest people in the world. How many rooms does Buckingham Palace have? A) 900. B) 600. C) 400. D) 300.
Answer: B
*Question*
Hello, everyone. My name is Tom . I'm a middle school student. I am a soccer fan . I play soccer after school every day. This is my father, His name is Mike Smith. He is a soccer fan, too. He plays soccer very well. I like playing soccer with my father very much. We have a great collection of 15 soccer balls. This is my mother . Her name is Linda Smith. And this my sister Mary .But my mother and my sister don't like soccer. They only watch TV at home. They say many TV programs are very interesting. ,. What sport do Tom and his father like playing? A) Soccer B) Basketball C) Tennis D) Ping-pong
**Answer**
A
*Question*
On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could read the whole "map" of the human body: DNA. DNA is something that everybody has, and it tells the body what to do. DNA is the reason that we look like our mother and father, because we get some of their DNA to make our own. People have been trying to understand the human body for a long time. In 1860, Gregor Mendel discovered a special reason why we look the same as other people in our family. It is because of small things named "genes" in our body. In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are real messages written in the DNA with a special language. In 1961, Marshall Nirenberg and Johann Matthaci found a message in DNA showing how DNA tells the cell to build its parts. Scientists have now found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one "word" means, we can help save more people from several illnesses. Most people hope that this will help make better medicine and help sick people. Other people worry that when people begin to know more words and find out lots of other information, we might use it in a wrong way, just to make people more attractive, or stop sick people from getting jobs. Man would have to meet a lot of trouble if DNA technic wasn't limited in use. What can we do if we understand some " words" of the language inside the body A) Make people get new jobs. B) Make medicine for illnesses. C) Make maps of human. D) Make people less attractive.
**Answer**
B