问题
选择题
.Jack's father is _______ actor and his mother is _______ scientist.[ ]
A.an; an
B.an; a
C.a; an
D.a; a
答案
答案：B
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.Jack's father is _______ actor and his mother is _______ scientist.[ ]
A.an; an
B.an; a
C.a; an
D.a; a
答案：B