亚洲免费av电影一区二区三区,日韩爱爱视频,51精品视频一区二区三区,91视频爱爱,日韩欧美在线播放视频,中文字幕少妇AV,亚洲电影中文字幕,久久久久亚洲av成人网址,久久综合视频网站,国产在线不卡免费播放

        ?

        Task 3

        2021-01-02 20:04本刊試題研究中心
        瘋狂英語·新閱版 2021年11期
        關鍵詞:日冕金星探測器

        本刊試題研究中心

        The United States space agency sent a spacecraft to explore the sun more closely than ever before in 2018. NASAs Parker Solar Probe (航天探測器) would fly through the hot solar atmosphere and come within just 6 million kilometers of the suns surface.

        The Parker Solar Probe would get almost seven times closer to the sun than earlier spacecraft. To do this, it would fly past Venus (金星) seven times over seven years. Each pass would change the probes orbit by providing a gravity push. It would move ever closer to the sun and straight into the corona (日冕), the suns outermost atmosphere.

        By exploring the suns corona, scientists hoped to learn why it is hundreds of times hotter than the suns surface. They would also study what drives the solar wind.

        The project was proposed in 1958, the same year NASA was established. “Now, its becoming a reality,” said project manager Andy Driesman.

        The Parker spacecraft has a 2.4 meter heat shield (護罩) that is 11 centimeters thick. It is made of two carbon sheets. The front has a white coating to reflect sunlight. It was expected to shine red when it experiences the extreme solar heat. Almost everything on the spacecraft would be behind this shield to keep its scientific instruments relatively cool.

        Besides, the spacecraft would also be traveling at a high speed. The probe would reach 690,000 kilometers per hour in the corona. The spacecraft would make its first flight past Venus in early October. Its first pass by the sun was expected in November.

        The Parker Solar Probe is the first NASA spacecraft to be named after someone who is still alive. Eugene Parker is a 94?year?old professor at the University of Chicago. He predicted the existence of solar wind 63 years ago. He planned to be at Cape Canaveral Air Force Station in the southern state of Florida to see the launch.

        1. Whats the advantage of the Parker Solar Probe compared to the earlier ones?

        A. It can change the orbit by flying past the sun.

        B. It can get closer to the sun and into the corona.

        C. It can study the effect of solar wind.

        D. It can fly through the hot solar atmosphere without protection.

        2. What can be inferred from the text?

        A. Human has little achievements in exploring the sun.

        B. Eugene Parker is the first one to study the sun.

        C. The Parker Solar Probe has to get close to the sun with the help of Venus.

        D. Human can get close to the suns surface within 6 million kilometers today.

        3. What can we learn about Eugene Parker?

        A. He started NASA.

        B. He foresaw the solar wind when he was 31.

        C. He designed the Parker spacecraft.

        D. He will study the sun using the Parker spacecraft.

        4. Where is this text likely to be taken from?

        A. A story book.? ? ? ? B. An advertisement.

        C. A science fiction novel.? D. A news report.

        猜你喜歡
        日冕金星探測器
        金星上的一天有多長
        金星上全是金子嗎
        “天問一號”火星探測器成功發(fā)射
        第二章 探測器有反應
        EN菌的引力波探測器
        第六章 飛向金星
        第二章 探測器有反應
        靠近太陽也有寒冷區(qū)域
        去金星要花多長時間?
        太陽上也下“傾盆大雨”
        噜噜噜噜私人影院| 亚洲精品中文有码字幕| 人妻中文字幕在线一二区| 国产精品高清网站| 米奇影音777第四色| 连续高潮喷水无码| 日本伦理视频一区二区| 国产精品偷窥熟女精品视频| 永久免费观看国产裸体美女| 亚洲av日韩aⅴ无码电影| 美女被搞在线观看一区二区三区 | av香港经典三级级 在线| 青青国产成人久久91| 黄页免费人成网址大全| 亚洲国产精品日本无码网站 | 日韩欧美亚洲国产一区二区三区| 久久99人妖视频国产| 又粗又黄又猛又爽大片app| 日韩av无码成人无码免费| 又色又爽又黄的视频网站| 成人性生交大全免费看| 中文人妻熟妇乱又伦精品| 自拍欧美日韩| 国产精品亚洲一区二区三区妖精| 人妻少妇偷人精品久久性色av| 色一情一乱一乱一区99av| 国产成人精品麻豆| 国产专区亚洲专区久久| 日韩精品视频一区二区三区 | 国产一级自拍av播放| 亚洲av综合色区无码另类小说| 日本熟妇人妻xxxxx视频| 97超级碰碰碰久久久观看| 野花视频在线观看免费| 日韩精品内射视频免费观看| 五月婷婷激情小说| 国产精品成年人毛片毛片| 风流老太婆大bbwbbwhd视频| 一个人看的www免费视频中文| 男男互吃大丁视频网站| 亚洲精品国产一二三区|