Read the following article and select the best answer. Article: When the traffic lights turn red, we will stop driving a car or crossing a street. Why is red used for traffic lights instead of other colors? As we know, scattering happens when light goes through the air. For the same media , if the _ is long, the sscattering will be short. If the wavelength is short, then the scattering will be long. Of all lights we can see, red has the longest wavelength. So the scattering is the weakest. That means the red light travels far. In fact, it travels farther on rainy days. Using the red light can help drivers in farther places see the lights. It helps drivers slow down or stop in time. So there will be fewer accidents. Moreover, red can also excite people. We can act more quickly when we see the color red. In a word, red lights help drivers stop in time and help prevent accidents. Question: According to the passage, the scattering of the red light is the _ . - longest - weakest - farthest - brightest
weakest

Read the following article and select the best answer. Article: Air is always around us. It is around us when we walk and play. From the time we are born, air is around us. When we sit down, it is around us. When we go to bed, air is also around us. We live in air. All the animals and plants need air. Living things can't live without air. We can live without food or water for a few days, but we can not live for more than a few minutes without air. We breathe in air. When we are walking or running, we need more air. When we are asleep, we need less air. We live in air, but we can't see it. We can only feel it. We can feel it when it is moving. Moving air is called wind. How can we make air move? Here is one way. Hold and open a book in you hand in front of your face. Close it quickly! What you feel is the air. Question: Which of the following sentences is TRUE ? - Sometimes we don't live in air. - Air is not around us when we go to bed. - We can live happily without air. - We need more air when we are working or running.
We need more air when we are working or running.

Q: Read the following article and select the best answer. Article: Jan was a window cleaner. One morning, Jan was in a lift of a high building with his window cleaning tools when the building was on fire. There were five other passengers in the lift. All of a sudden the lift stopped. Although they didn't know what had happened outside, they had only 100 minutes to get out of the building before it would fall into the dust. Soon smoke began coming into the lift. The men knew that something was wrong. They tried to open the door but found a wall in front of them. The wall had the number 15 on it and they knew they were on the 15th floor. But their lift usually didn't stop there, so there was no opening for them to escape. Jan decided they would have to make their own. Knowing that the wall was made of a material that could be cut through, Jan took out his window cleaning tools, and began knocking a hole through the wall. When he felt tired, others helped. Starting with one small hole, they cut through the three-inch-thick wall. Then they kicked hard at the wall. The wall cracked apart. They saw before them a tile wall! Refusing to give up, they knocked a hole through the tile, then made the opening big enough to get through. Surprisingly, the fire-fighters were outside the hole, they took Jan and his partners to the nearest stairs and they ran down the stairs as quickly as possible. By 10:23, Jan and the others ran out of the building. Five minutes later, the building burned down. Question: What was Jan doing when the building was on fire? - He was cleaning the windows. - He was up to visit his friend. - He was on his way to his workplace. - He was cleaning the lift.
A: He was on his way to his workplace.

Question: Read the following article and select the best answer. Article: Many people like to travel by plane because it is fast, but I don't like it because an airport is usually far from the city. You have to get there early and wait for hours for the plane to take off and it is often late. You can't open the windows. You can't choose the food. Planes are fast, but they still take hours to get out of the airport and into the city. I like traveling by train . I think trains are safe. Railway stations are usually in cities. When you are late for a train, you can catch another one. You can walk around in the train and open the windows. You can see many interesting things on your way. I know it takes a little more time. I also like cars. You can start your journey when you want to , and you don't need to get to a railway station or a bus stop. Also you can carry many things with you in a car. But sometimes there are too many cars on the road. ,. (5) Question: What is the bad thing about the car ? - You needn't go to a station . - You can start your journey when you want to. - There are too many cars on the road. - You needn't go to a bus stop.
Answer: There are too many cars on the road.

Q: Read the following article and select the best answer. Article: Last Saturday night Jenny was walking through a mall in London , texting on her phone. She wasn't watching where she was going , so she fell into a sewer and got trapped. Luckily she didn't hurt badly. She quickly climbed out and walked away. But her accident was caught on a mall camera. Then someone posted it on YouTube. The video was viewed almost 2 million times and received national attention. Jenny was angry with this, but she learned a deep lesson: Texting while walking is dangerous. This time I just fell into a sewer. Next time I didn't know what would happen. Maybe I would be knocked down by a car or something else. It was horrible. Jenny may be famous for her mistake. After that, she was laughed at by her friends and workmates. She _ what she had done. But it was too late. However, she wasn't the only one who got into trouble while texting on the phone. In 2008, more than 1000 Englishmen visited hospital for similar reasons. They were walking and texting or talking on the phone. Suddenly a wall appeared! Or a hole or something like that got in the way. There were cuts, bumps, broken bones and even worse result happened on them. So we must be careful when we are walking. Don't send messages or talk with somebody on the phone while walking. Or you may hurt yourself and become another Jenny in the future. Question: Jenny's accident received national attention because _ . - she posted the accident video on YouTube - her accident was caught on a small camera - her accident video was on TV - her accident video on YouTube was viewed almost 2 million times
A: her accident video on YouTube was viewed almost 2 million times