髋关节是
A.联合关节
B.球窝关节
C.节
D.杵臼关节
E.复关节
参考答案:D
Bungee jumping is an exciting activity, very popular among young adults, ___________ courage matters more than strength.
A.whose
B.that
C.of which
D.where
禁止接种流感疫苗的人群有对()。