侏懦症是因为在幼年时 [ ]
A．甲状腺激素分泌过多
B．甲状腺激素分泌过少
C．生长激素分泌过多
D．生长激素分泌过少
答案：D
My bike is out of order. I’ll ___ it ____.
A．have; to repaired
B．have, repairing
C．to have; repairing
D．have; repaired
珠蛋白生成障碍性贫血的Bessman分类特点是（）.
A.MCV正常，RDW正常
B.MCV增加，RDW正常
C.MCV减低，RDW正常
D.MCV增加，RDW增加
E.MCV减低，RDW增加
