北师大版英语九年级unit4space单元同步练习

北师大版英语九年级unit4space单元同步练习内容摘要：

r so as to . A. play with it B. use a metal ring C. turn it into a water ball D. pour more water onto it 59. About students and teachers watched the lecture both from a special classroom and on TV. A. 330 B. 60,000,000 C. 6,000,330 D. 60,000,330 60. Which is NOT true according to the passage? A. Wang Yaping is China39。 s second female astronaut. B. Wang Yaping gave the lecture from space all by herself. C. The lecture was warmly weled by the students. D. The sky isn39。 t blue but black when astronauts see it in space. B Some people wonder why countries spend millions of dollars on space projects. They want to know how space research helps people on Earth. Actually, space technology helps people on Earth every day. This is called “spinoff technology”. Spinoff technology is space technology that is now used on Earth. In early space programs, such as the Apollo missions(任务 ) of the 1960s and 1970s, and in the space shuttle missions today, scientists developed objects for the astronauts to use on the moon and in space. We now use some of these objects every day. For example, we have Quartz clocks and watches with an accuracy of one minute a year. We purify the water we drink with a water filter(过滤器 ) designed for the astronauts39。 use in space. The cordless, handheld tools we use in our homes, such as cleaners, flashlights, drills, and irons came from the technology of these early space programs. On cold winter days, we can stay warm with battery operated shoes and socks, and insulated(绝缘的 ) coats and jackets. All of these clothes are similar to the spacesuit designs that keep astronauts fortable in the temperatures of the moon, and are spinoffs from space technology. These products are only a few examples of the many ways space technology helps us in our everyday life. No one knows how new spinoff technology from the International Space Station will help us in the future. 61. Which of the following is NOT a spinoff? A. Water filters B. Quartz watches C. Battery operated socks D. Spacesuits worn by astronauts 62. The underlined part “purify the water” probably means “make the water ”. A. light B. clean C. bright D. warm 63. Which of the following is the best title of the passage? A. Future of Space Technology B. History of Spinoffs C. Spinoff Technology D. Space Projects 64. From the passage, we can infer(推断 ) that the writer . A. believes that space technology will be widely used on Earth B. doubts if spinoffs have any good effect on human beings C. agrees to do more research on spinoff technology D. suggests using more spinoffs in our daily life C As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success. Scientists have found out that the radiation(辐射 ) is the greatest danger to spacemen in space. When spacemen are working in space, they are in danger of the radiation from the sun and other stars, which is bad for their health. The harm of the radiation won39。 t be found until their children even grandchildren are born. Some special medicine may work a little, but no really effective medicine has been found so far. Space rubbish is also thought to be a great danger to spacemen. It39。 s reported that there were 9,000 manmade things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish. An explosion(爆炸 ) in space in 1999 made a cloud of 300,000 fragments, each at least 4 mm in size. A small piece of these even knocked a spaceship window and caused some damage(损坏 ). Scientists are watching and reporting any possible danger all the time. They are working to deal with space rubbish. Although space is really dangerous, it interests many people on the earth. In the near future, it may bee possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should do something to help improve the space environment. 65. shows the manmade things in space in the correct way. A. Space rubbish: 20%。 Spaceships: 0%。 Satellites: 40% B.。