2019年mpacc考试英语真题——其他836

{01We should make a careful study of his____.
A.useful teaching experiences
B.useful teaching experience
C.usefully teaching experiences
D.usefully teaching experience
解析：experience作“经验”解时，为不可数名词；用作可数名词时，意为“经历”。
本题选B。
{02}He is only thirty, but has got _____.
A.a few grey hairs
B.a few grey hair
C.a little grey hair
D.a little grey hairs
解析：hair为不可数名词，表示“全部头发”但指几根白发时，用复数形式。
本题选A。