用an 因为asian 发元音
Asian[英][ˈeɪʒən,ˈeɪʃən] [美][ˈeʒən,ˈeʃən]
n.亚洲人adj.亚洲的,亚洲人的
复数：Asians；He like maths, () English.A.all overB.in factC.such as D.as well as该填那个选DHe likes maths, as well as English他喜欢数学,以及英语 as well as也；和…一样；不但…而且