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- 1The little boy didn't know____________ . C.which hat was his D. which hat his was 选哪个 为什么选这
- 2什锦糖是巧克力,水果糖和奶糖按1:3:4制成.三种糖各27千克,水果糖用完后,奶糖加几千克巧克力剩几千克
- 3My father will ask a ___(滑冰)to teach me ___(滑冰)on real ice next Sunday.
- 4甲乙两地相距8千米,汽车行完全程要1.6小时,而步行要16小时某人乘车从甲地出发去乙地,行了1.15小时后
- 5设F1和F2为双曲线x2a2−y2b2=1(a>0,b>0)的两个焦点,若F1、F2、P(0,2b)是正三角形的三个顶点,则双曲线的离心率为_.
- 6观察日记,要观察水仙花的,400字.
- 7根号12*根号3-根号3*根号75计算
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