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- 11.太阳光传到地球约需500S,由此可知日地距离约为__米.
- 2My favourite sport is basketball as it is very exciting.I like basketball because the N.B.A.stars
- 3事物内部的肯定方面和否定方面的对立统一运动,从表现形式上看( ).
- 4鸡蛋壳为什么泡在醋里会变软
- 5为什么Cu(OH)2不能实现一步变成CuO
- 6定语从句what做关系代词为什么等于all that
- 7在等比数列{an}中,a1=1,an=-512,Sn=-341,则q=_.
- 8写一篇关于月亮的话题作文,要语句精美,要有诗句引用,
- 9The boys and girls are _______ the running race in the playground. A. looking B. watching C. seeing
- 10六一班男生人数是总人数的11分之5,后来又从外校转来一名男生,这时男生人数是总人数的15分之7,