3.the mother is very glad;her baby is begining__________.
题目
3.the mother is very glad;her baby is begining__________.
a.understanding what she means
b.tounderstanding that she meant
c.to understanding what she means
d.noticing what she means
答案
a.understanding what she means 是正确的.
begin to do sth /begin doing sth 开始做某事 ,根据固定结构排除b,c
d.noticing what she means 不符合句意.
句意是：那位母亲很高兴,她的孩子开始懂得她的意思了.
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
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