题目

已知关于X的方程X2(平方)+2(2-M)X+3-6M=0
(1)求证:无论M取什么实数,方程总有实数根
(2)如果方程的两个实数根X1,X2,满足X1=3X2,求实数M的值
1.Bill's birthday is only in _.
A few day's time B few days' time
C a few day's time D a few days' time
2.A little boy was heard _ the Christmas songs at the party .
A sing B to sing C sang D sung
3.I don't know Mike _ him to help me .
A enough well to ask B well enough to ask
C enough well asking D well enough asking
改同意句
None of shoes are the right size for me .
All the shoes are _ too big _ too small for me .
He runs more slowly than those boys .
Nobody runs _ _ than he among all the boys.
造句
far + adj /adv（太,很）
far + 比较级（太,很）

提问时间：2021-03-13

答案

1.D
2.A
3.B
All the shoes are (either)too big (or)too small for me .
Nobody runs ( more slowly )than he among all the boys.
far + adj /adv（太,很）-These days I keep a far too busy life.
far + 比较级（太,很）_She is far better than me at writing