题干
We have _____ art teacher. He is ______ funny.
A：a, a
B：an, the
C：an, \
答案(点此获取答案解析）
C
We have _____ art teacher. He is ______ funny.
A：a, a
B：an, the
C：an, \
如图是转基因超级鼠(也就是把小鼠培育成了大鼠)产生的详细示意图。