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Some people wonder why countries spend millions of dollars on space projects. (16) They want to know how space research helps people on Earth. Actually, space technology helps people on Earth every day. This is called "spin-off technology." Spin-off technology is space technology that is now used on Earth. (17) In early space programs, such as the Apollo missions 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. (18) For example, we have quartz crystal clocks and watches accurate to within one minute a year. We purify the water we drink with the water filter designed for the astronauts'use in space. The cordless, hand-held tools we use in our homes, such as vacuum cleaners, flashlights, drills and saws came from the technology of these early space programs. On cold winter days, we can stay warm with battery-operated gloves and socks, and specially-made coats and jackets. All these clothes are similar to the spacesuit designs that kept astronauts comfortable in the temperatures of the moon, and are spin-offs from space technology. These products are only a few examples of the many ways space technology helps us in our everyday lives. No one knows how new spin-off technology from the International Space Station will help us in the future.
未听先知
预览三道题各选项,由选项中出现的 International Space Station、 space shuttle missions、space program、 technology、 astronauts 等词可以判断,短文内容与航天技术有关。
详解详析
16. What do some people want to know about space exploration?
A)。(详解)短文开头提到,有些人想知道为什么国家在太空项目上花费数百万美元,他们想知道太空研究 如何能帮助到在地球上的人们。录音中的 helps与A)选项中的 benefits是同义转述,因此答案为A)。
17. What did scientists do for the space shuttle missions?
C)。(详解）短文中提到,在早期的太空项目中,如在20世纪60年代和70年代的阿波罗任务以及今天的 航天飞机任务中,科学家们开发了供宇航员们在月球上和太空中使用的物品。因此答案为C)。
18. What does the speaker say about quartz crystal clocks and watches?
B)。(详解)短文提到,我们现在使用的石英钟和石英表的精确度达到了一年误差在一分钟以内,因此答 案为B)。