We saw three children under the tree.One is a boy,_are girls.A.B.the otherC.othersD.the other two

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• 1）We saw three children under the tree.One is a boy,____ are girls.a.the other b.other two v.others d.the other two2)This key _______ be peters.He still in the locka.may not b.can't d.mustn't c.neddn't3)Some students of Grade 8 are for the desion while _______ are against ita.other b.others c.the others d.another4)My way ______ happy is to have as much delicious food as possible(be)5)Many people ______ it was impossible to travell to the moon.(think)
• We saw three children under the tree.One is a boy,____are girls.
• 1）We saw three children under the tree.One is a boy,____ are girls.
• We saw three children under the tree.One is a boy,_are girls.A.B.the otherC.othersD.the other two
• 用韦达定理做:x^2+2x+m-1=0,m取何值,方程有两个不相等的实数根?
• 若方程ax2+bx+c=0（a≠0）有两个实根x1，x2，则有 x1+x2＝−b/a，x1•x2＝c/a此定理叫韦达定理，根据韦达定理可以求解下题：已知lgm，lgn是方程2x2-4x+1=0的两个实数根，则 （1）求mn的值； （2）求l