[单项选择]{{B}}D{{/B}}

Now that man has actually landed on the surface of the moon, he has learned many new things about it. But one thing man knew before he ever reached the moon was that there was no life on it. There is no atmosphere on the moon. The lack of air means that the moon is not protected from any of the sun’s rays. The sun sends out heat and light radiation (辐射). Life on the earth depends on heat and light. But the sun also sends out dangerous kinds of radiation. The earth’s atmosphere protects us from most of them. On the moon, however, there is no atmosphere to stop the radiation. All the sun’s rays beat down on the surface of the moon. Because there is no atmosphere, the moon’s surface is either extremely hot or extremely cold. As the moon circles around the earth, the side of it that is lighted up by the sun becomes very hot. The A. the sun B. the earth C. the planet D. the moon 查看答案 更多"{{B}}D{{/B}} Now that m"的相关试题: [单项选择]{{B}}D{{/B}} Now that man has actually landed on the surface of the moon, he has learned many new things about it. But one thing man knew before he ever reached the moon was that there was no life on it. There is no atmosphere on the moon. The lack of air means that the moon is not protected from any of the sun’s rays. The sun sends out heat and light radiation (辐射). Life on the earth depends on heat and light. But the sun also sends out dangerous kinds of radiation. The earth’s atmosphere protects us from most of them. On the moon, however, there is no atmosphere to stop the radiation. All the sun’s rays beat down on the surface of the moon. Because there is no atmosphere, the moon’s surface is either extremely hot or extremely cold. As the moon circles around the earth, the side of it that is lighted up by the sun becomes very hot. The A. Why is there no air on the moon B. Why is the moon colder than the South Pole C. Why is the moon hotter than the earth D. Why is there no life on the moon 查看答案 [单项选择]Now that man has actually landed on the surface of the moon, he has learned many new things about it. But one thing man knew before he ever reached the moon was that there was no life on it. There is no atmosphere on the moon. The lack of air means that the moon is not protected from any of the sun’s rays. The sun sends out heat and light radiation (辐射). Life on the earth depends on heat and light. But the sun also sends out dangerous kinds of radiation. The earth’s atmosphere protects us from most of them. On the moon, however, there is no atmosphere to stop the radiation. All the sun’s rays beat down on the surface of the moon. Because there is no atmosphere, the moon’s surface is either extremely hot or extremely cold. As the moon circles around the earth, the side of it that is lighted up by the sun becomes very hot. The temperature there reaches more than 300 degrees Fahrenheit (华氏温度). This is hotter than boiling water. The hot lunar day lasts two weeks. It is fol 查看答案 [单项选择]A. The man has retired. B. The man always gets up very late. C. The man doesn’t like doing exercises. D. The man always spends his day at home. 查看答案 [填空题]{{B}}Passage Two{{/B}} Being a man has always been dangerous. There are about 105 males born for every 100 females, but this ratio drops to near balance at the age of maturity, and among 70-year-olds there are twice as many women as men. But the great universal of male mortality is being changed. Now boy babies survive almost as well as girls do. This means that, for the first time, there will be an excess of boys in those crucial years when they are searching for a mate. More important, another chance for natural selection has been removed. Fifty years ago, the chance of a baby (particularly a boy baby) surviving depended on its weight. A kilogram too light or too heavy meant almost certain death. Today it makes almost no difference. Since much of the variation is due to genes, one more agent of evolution has gone. There is another way to co A. A．Lake of mates. B．A defective gene. C．A fierce competition. D．A lower survival rate. 查看答案 [单项选择]A. The man has been complaining too much. B. The man’s toothache will go away by itself. C. The man should have seen the dentist earlier. D. The man should confirm his appointment with the dentist. 查看答案 [单项选择]A. The man has finished his term paper. B. The man wishes he had done better this term. C. The man still has not finished his paper. D. The man wished the woman would help him. 查看答案 [单项选择]A. The man has never seen the woman before． B. They work for the same company． C. They work on the same floor．D. The woman is interested in market research． 查看答案 [单项选择]A. The man has never seen the woman before. B. The two speakers work for the same company. C. The two speakers work for the same floor. D. The woman is interested in market research. 查看答案 [单项选择]A. The man has taken it five times. B. No one wants to attend it. C. It is very interesting. D. It is not popular with students. 查看答案 [单项选择]The man has never seen a horse before, has he A. Yes, he has. B. No, he hasn’t. C. Yes, he hasn’t. 查看答案 我来回答: 提交 最新试题 ●    [多选题]安全标志牌的固定方式可采用（ ）。 ●    [单选题] （ ）是指凡属铁路总公司资产，涂有铁路路徽，按铁路总公司统一规定涂打车型标记、 ●    [单选题]工作票未经()或工作票所列主要安全措施（开关、刀闸、接地）未全部落实，工作负责人即安排工作 ●    [单选题]表示R、G、B三个基色的二进位数目分别是6位、6位、4位,因此可显示颜色的总数 是()种. ●    [多选题]《征信业管理条例》规定，信息主体认为征信机构或者信息提供者、信息使用者侵害其合法权益的，可 ●    [单选题]车辆外部最大宽度 网站地图 我要搜题网  版权所有  ©2023  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码