吊打
参考答案:
在钻头上施加很小的钻压钻进的过程。
已知(1+kx2)6(k是正整数)的展开式中,x8的系数小于120,则k=________.
Always the old lady ______ sit for hours doing nothing at all.
A.was used to
B.would
C.used to
D.should