题干
Amy is from the UK. She's ______.
A：a student
B：new teacher
C：a boy
答案(点此获取答案解析）
A
Amy is from the UK. She's ______.
A：a student
B：new teacher
C：a boy
=0.56，S
=0.60，S
=0.50，S
=0.45，则成绩最稳定的是（ ）