【正文】 u take off the stamp. kind of stamps are usually more expensive? A. Old ones. B. New ones. C. Old ones that have not been used. D. Old ones that have been used. one is not the reason to join a group? A. To enjoy great fun. B. To learn something about stamps from other members. C. To trade stamps with other members. D. To learn how to make stamps from others. one is not true according to the passage? A. Some people are very interested in the “first day covers”. B. A “first day cover” is the envelope you firstly used. C. You can often buy used stamps very cheaply in the stamp sales. D. Unusual stamps are usually more valuable. ( C ) Is there anything you can do to keep germs(細(xì)菌 ) out of your body? Think about the three ways that germs e into your body: through breaks in your skin, with the air you breathe, and with food you eat. How can you keep germs from ing in through breaks in your skin? In the first place, you can be careful, so that you do not hurt yourself. Once you have cut your skin, you must wash the cut at once with soap and hot water. Soap(肥皂 ) and hot water kill germs or wash them away. Can you keep germs from ing into your body through your nose and throat? You can’t stop breathing, of course. You can’t help breathing in some germs. What you can do is to stay away from people if they have colds and other sicknesses made by germs. Some kinds of germs move through the air. They go from one person to another. If you have a cold, you should try not to give your germs to others. Be sure to cover your mouth with a tissue when you cough. How can you keep germs out of your mouth? One way is by keeping such things as pencils and fingers out of your mouth. Another way is wash your hands before meals. Then you will not put germs on the food you eat. You should also wash your hands after you use the toilet. Never use a drinking glass that someone else has used. Wash it first with soap and hot water. Never bite from food if someone else is eating it. passage is mainly about . A. the ways that germs e into our body B. how to fight germs C. how germs make us sick D. where the germ is second paragraph tries to tell us . A. how germs e into our bodies B. how we can keep germs from ing in through breaks in our skin C. why germs e into our bodies D. why to protect ourselves can keep germs from ing into our bodies through our noses and throats when . A. we stay away from people who have colds and other sicknesses. B. we stop breathing C. we do not hurt ourselves D. one person goes to another person we have a cold and want to cough we should cover our mouths because . A. we should keep germs in our mouths. B. the germs will go from one person to another through the air. C. we will feel better D. we give too many germs to others the last three paragraphs the writer tells us . A. how to stop germs from ing into our bodies through our mouths. B. how to keep the food we cat clean C. what to do to keep our mouths clean D. what kind of hospital we should go to when we are ill ( D ) In 1826, a Frenchman named Niepce needed pictures for his business. But he was not a good artist. So his business. But he was not a good artist. So he invented a very simple camera(照相機(jī) ). He put it in a window of his house and took a picture of his garden. That was the first photo. The next important date in the history of photography(攝影術(shù) ) was in 1837. That year, Daguere, another Frenchman, took a picture of his reading room. He used a new kind of camera in a different way. In his picture you could see everything very clearly, even the smallest thing. This kind of photo was called a Daguerreo type. Soon, other people began to use Daguerre’s way. Travellers brought back wonderful photos from all around the world. People took pictures of famous buildings, cities and mountains. In about 1840, photography was developed. Then photographers could take pictures of people and moving things. That was not simple. The photographers had to carry a lot of film and other machines. But this did not stop them. For example, some in the United States worked so hard. Mathew Brady was a famous American photographer. He took many pictures of great people. The pictures were unusual because they were very lifelike(栩栩如生的 ). Photographers also became one kind of art by the end of the 19th century. Some photos were not just copies of the real world. They showed the feelings, like other kinds of art. first photo taken by Niepce was a picture of . A. his business B. his house C. his garden D. his window Daguerro type was . A. a Frenchman B. a kind of picture C. a kind of camera D. a photography a photographer wanted to take pictures of moving things in the year of 1840s, he had to . A. watch lots of films B. buy an expensive camera C. stop in most cities D. take many films an