How could we tell time if there were no watches or clocks anywhere in the world? The sun is probably the world's first "clock", except in the far north, where the Eskimos live. There, it's dark most of the winter, and light most of the summer. But in most of the world, people have used the sun as a clock. Even today, if you don't have a clock, you can still know that when the sun shines, it's day and when it's dark, it's night. The sun can also tell you if it's morning, noon, or afternoon. Some people live near the sea from the _ In the daytime, for about six hours, water rises higher and higher on the beach. And then it goes down and down for about six hours. The same thing happens again at night. There are two high tides and two low tides every 24 hours. Seamen on the ship learn how to tell time by looking at the moon and the stars. The whole sky is their clock. In some places in the world the wind comes up at about the same time every day or changes direction or stops blowing. In these places the wind can be the clock. A sand clock is an even better clock. If you had fine dry sand in a glass shaped like the one in the picture, you would have what is called an hourglass. The sand in the hourglass goes from the top part to the bottom in exactly one hour. When the hourglass is turned over, the sand will take another hour to go back again From the passage we can know there are _ ways to tell time besides the clock and watch. A) 3 B) 4 C) 5 D) 7
C
Robert lives in a small town. Five years ago, when he was nineteen, he finished middle school. He didn't like any subjects except playing when he was at school. Of course he learned nothing and the bosses wouldn't use a man like him. He has to stay at home, but doesn't do any housework, only watches TV or lies on bed. It makes his parents angry. They want him to study something, he always think it difficult and doesn't listen to them. One day Robert was walking near a bookshop while some young men were talking about the writers. He heard the publishing house pays the writers a lot. He became interested in it. As soon as he got home, he began to write. But he couldn't write anything. At last he bought a book and copied a story. Then he posted it to the publishing house. He waited for nearly half a year, but didn't get any answers. He had to ask an editor on the telephone, "Have you read my story yet, sir?" "Yes," said the editor, "I had read it before you were born! " The bosses wouldn't use Robert because _ . A) he couldn't do anything B) he likes nothing except playing C) he doesn't go to work on time D) he isn't friendly to his workmates
A
Q: Patrick Johnson,an artist for the Washington Post,found some treasure in his new house35,000 dollars in a place where no one could see it. Although he had car and house payments in his head, he still decided to return all of the money to the previous owner of the house,Mr. Williams. Would you have done the same? Just hours after he had bought the house,Patrick came into the small house,where he was planning to lay out his tools and hang things up. He looked up and noticed a little hole in the wall. He didn't know what it was inside, so he walked towards the wall. It was very dark inside,but an old box caught his eye. "I caught the thing,it was heavy. I thought it might be some pieces of wood." he said. Actually it was not. It was filled with lots of dollar bills. But he and his wife knew they had to return the money to Mr. Williams. "I've got two boys and we teach them to be honest and to do what is right. I knew this was a teachable moment that I would never get back again." Patrick said to his wife. "So I thought we would do something honest with it. It's been a great thing for us and our kids." Patrick found the box _ . A) outside the small house B) in his wife's room C) in the hole of the wall D) among his tools
A: C
Question: Unless we spend money to spot(,) and prevent asteroids now, one might crash into Earth and destroy life as we know it, say some scientists. Asteroids are bigger versions of the meteoroids that race across the night sky. Most orbit the sun far from Earth and don't threaten us. But there are also thousands of asteroids whose orbits put them on a collision course with Earth. But $500 million worth of new telescopes right now, then spend $10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we'll have a way to change its course. Is it worth it? Two things experts consider when judging any risk are (i) How likely the event is; (2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. Sounds pretty rare but if one did fall. It would be the end of the world. "If we don't take care of these bid asteroids, they'll take care of us," says one scientist. "it's that simple." The cure, though, might be worse than the disease. Do we really want fleets(,) of nuclear weapons sitting around on Earth? "the world has less fear from doomsday rocks than from a great nuclear fleet set against them." Said a New York Times article. What does the passage say about asteroids and meteoroids? A) They are heavenly bodies different in composition. B) They are heavenly bodies similar in nature. C) They are more asteroids than meteoroids. D) Asteroids are more mysterious than meteoroids.
Answer: B
*Question*
There are forty-seven different kinds of kangaroos . The smallest kangaroos are about a quarter of a meter long; the biggest are taller than a man. Kangaroos have very long strong back legs. These are used for jumping. They also have long strong tails used for resting on. Kangaroos' front legs are much shorter, and are almost like arms. Kangaroos' heads are quite small, but their ears are quite large. Mother kangaroos have a pocket at the front. They have one baby each year. When it is born, the baby kangaroo is straight into its mother's pocket. The baby kangaroos stay there for six months. The biggest kangaroos stand more than 2 meters tall, and their legs are so strong that they can jump more than 9 meters. They are very fast, and can travel at more than 50 kilometers an hour. They are very strong, but only eat fruit, leaves and grass. How long does a baby kangaroo stay in its mother's pocket? A) One month. B) Three months. C) Six months. D) Five months.
**Answer**
C
*Question*
Amy is an American student in Des Moines, Iowa. She is nine years old and she is in Grade Four this year. Now she and her friends are pen pals of the students in India. In their letters, Amy learns that life of Indian children is difficult. And they don't have money to buy desks for school. She is surprised and wants to help them. She and her friends collect $711. A charity group helps them buy 75 desks. "We have many good things in our country," said Amy. "We should help others." She also hopes to raise money to build a well for them. Then the students can get clean water from it. It may be a good gift for the Indian children. How is the students' life in India? A) It's hard. B) It's boring. C) It's happy. D) It's rich.
**Answer**
A