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- 11,We shouldn't do these things(祈使句) ( )( )these things.
- 2I don't know ().Can you tell me?A.where do we meet B.when are you going to do this B.what we will
- 3在梯形ABCD中,AD平行BC,角C等于90度,E为CD的中点,EF//AB于点F,连接BE,当AD=1,BC=7,且BE平分∠ABC,求EF长
- 4下边是一个按规律排列的鼠标,请用汗的代数式(n为正整数)表示数表中第n行第n列的数 第一列 第二列 第三
- 5what does that have to do with you.anyway...
- 6Do your best,I believe you will
- 7函数fx=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)
- 8We should exercise to stay healthy为什么用TO/?
- 9设y=(ax+b)/(cx+d),a.b.c.d都是有理数,x是无理数.求证:(1)当bc=ad时,y是有理数(2)当bc不等于ad时,
- 10请问液化、汽化、熔化、凝固、凝华、升华这六种物理现象中,哪些是需要温度高的?哪些是需要温度低的?