题干

美国宇航局2008年11月10日宣布,“凤凰”号火星探测器的探测使命已经终结,它将长眠在火星上.“凤凰”号火星探测器于2008年5月26日在火星北极区域登陆,已经探测到来自火星云层的降雪,而且找到了火星上曾经存在液态水的最新证据.读下、表中的相关数据,结合所学知识回答下题.

行星

质量(地球为1)

体积(地球为1)

公转

周期

自转周期

赤道面与轨道

面之间的夹角

地球

1.00

1.00

1年

23时56分4秒

23°26′

火星

0.11

0.15

1.9年

24时37分

23°59′

上一题 下一题 0.0难度 选择题 更新时间:2017-09-29 02:05:46

答案(点此获取答案解析)

同类题4

完形填空

    Which comes first, happiness or money? Are richer people1? And 2how do people get richer? A recent study could tell you the answer.

    The study3thousands of teenagers and found that those who felt better about4as young adults 5 to have higher incomes by the time they 629. Those who were happiest earned an average of $8,000 more than those who were the most7.

    The researchers, from University College London and the University of Warwick, say that very gloomy(沮丧的)teens, no matter how tall or smart they were, earned 10% less than their peers8the happier ones earned 930% more.

    Happier teenagers have an easier time 10school, college and the job 11,12 because they always feel better about life. It may13 be true that happier people find it easier to make friends, who are often the key to homework help or networking.

    A report in June suggested that professional respect was more important than14in terms of workplace happiness. In August scientists announced that they had found the 15for happiness in women. Alas! The same gene doesn't appear to have16effect on men. And in October researchers in the UK and in the US announced that people who eat seven portions of fruit and vegetables a day report being the happiest.

    If it is really true that happier kids17being wealthier kids, is it necessary for parents to get their kids to do the homework? The fact is that 18 homework will make kids happy but surely hurt their grades. Studies do show19 that more education20better-paid jobs, which may give us a deep thought.