Q: Do you like traveling? Have you traveled to Los Angeles? Have you traveled to the moon? A rich man plans to live on Mars. Is it the beginning of a science fiction novel? In fact, it happens in the real world. Elon Musk is the founder and CEO of a private spaceflight company. He has said his plan is to live on the planet. He says he plans to live on Mars with a group of fewer than ten people. He will take them on a rocket powered by liquid oxygen and methane . Each one should pay $ 500,000 to fly there. However, these passengers are not going there to travel, but they are going to work. They need to carry tools to build houses and grow crops there. Musk believes one person out of every 100,000 people may be interested in making the journey. Then Mars will have sixty-three thousand people in the future. A rich man plans to live on _ . A) Los Angeles B) Mars C) the moon D) America
A: B

Q: Cause and effect is one way to explain things that happen around us. Many things happen because something caused or influenced them to happen. Sometimes it is hard to look at a cause and find out what caused or influenced them to happen. Sometimes it is hard to look at a cause and find out what causes the effect. It may help you to start with the effect and use your reasoning skills. Think about all the things you know that could be reasons for the effect you can see. For example, you may see someone putting on a heavy jacket. This is the effect. To look for a cause, think to yourself, "What would take someone put on a heavy jacket?" Maybe the person is going outside into very cold weather. Maybe the person works in the penguin pen at Sea World. Maybe the person is going to visit an ice skating rink where the air is kept very cold. All of these things could be a cause for putting on a heavy jacket. Now, think about a second example. The effect is a boy named Abi has to go to the head teacher's office. What are the possible causes? Maybe he bullied another student. Maybe he is just being picked up early. Maybe he is being given a prize! Here is another example for you to think about its cause and effect. Cait, 13, was trying to fall asleep when her 8-year-old brother, Doug, came into her room. He looked around a bit, but seemed really out of it. Then Doug went back into the hallway and stood there looking straight up at the hall light for quite a while. Little brothers can be very strange, but this was really much too strange. Cait's father appeared and explained that Doug was sleepwalking. What's the cause end effect, could you tell? ,. What was Doug doing when his sister Cait tried to fall asleep? A) He was going outside. B) He was reading a story. C) He was sleepwalking. D) He was looking for his dad.
A: C

Q: In northern China during spring, big sandstorms often make trouble for people. Sandstorms usually happen in spring. They have happened in more than 10 provinces in northern China this year. People in southern China don't have to worry about this kind of bad weather. Most of the sand comes from the north of China. In northern China, lots of places have few trees and don't get much rain. When there aren't many trees, the ground can't keep enough water. Over the years, the ground dries up and turns into sand. When spring comes and the ice melts, the ground becomes loose. Strong winds take the loose sand into the sky. Besides, in northeast China, there is some vast desert. Sandstorms are bad for people's health. If people breathe in too much sand, they will cough or have serious illnesses. Sandstorms also give farmers lots of problems. Sometimes their sheep get lost in the storms and never come back home. The winds also tear the farmers' houses down. What can you do to stop sandstorms? Here's a piece of advice. Ask your parents to help you plant some trees in spring. If you see people cutting down too many trees, tell them about the dangers of sandstorms, and ask your government to stop them. Which of the following is NOT a way to stop sandstorms? A) Plant more trees in spring. B) Stop people to cut down too many trees C) Don't stay outside when sandstorms happen. D) Tell people about the dangers of sandstorms.
A: C

Q: People are always afraid of making mistakes. But sometimes it's not bad to make mistakes, and here is why. At first , mistakes are a clear sign that you are trying new things. It's always good to new things, because when you are trying new things your are growing. If you never try new things , how can you improve ? How can you create? The simple answer is, " You can't ." Look around you, everything you see is the result of someone trying new things. Another good thing about mistakes is this : when your are making mistakes, you are learning. Consider this: Edison failed 10,000 times before he invented the light bulb. When he was asked how he felt to fail that many times, but rather had learned 10,000 things that didn't work. Finally , when you make a mistake, you are that much closer to success. Why? Because you have said what you should say, and you have done what you should do. Every time you make a mistake, you are closer to success. But it doesn't mean that you can make mistakes without thinking. Instead, when you try new things you have to think them over, so that you can keep away from some unnecessary mistakes. We shouldn't spend all our time and money on the only one way , but use them correctly. Because our time and money are limited. There is an old saying, " If you are not making mistakes, you are not trying hard enough." So go bravely and make mistakes. And learn. And grow. And succeed. ,,. (5,2,10) When you make a mistake, you are closer to _ . A) time B) money C) success D) everything
A: C