卡环属于哪一种固位体（）
A.冠外固位体
B.冠外附着体
C.冠内附着体
D.冠内固位体
E.以上都不是
参考答案：A
The team, which________ ten experts, will be sent to investigate the matter.
[ ]
A. consisting of
B. consists of
C. is consisting of
D. consisted of
女性成人体液总量约占体重的（）
A.20%
B.30%
C.40%
D.50%
E.60%
