“竹筒饭”是哪个民族的传统食品？
参考答案：
黎族
There are many kinds of sports, _______ my favorite is swimming.
A．as
B．then
C．but
D．so
参与Ⅱ型超敏反应的免疫球蛋白(Ig)是
A．IgM/IgD
B．IgM/IgG
C．IgA/IgE
D．IgM/IgA
E．IgE/IgD
