比较理想的耕种土壤是
A．沙土
B．壤土
C．黏土
D．盐碱土
参考答案：B
Tom is an American boy. _____ mother is a doctor. [ ]
A. Her
B. He's
C. His
D. Him
骨盆骨折最易损伤的部位是（）
A.坐骨神经
B.膀胱
C.直肠
D.后 * *
E.输尿管
