A great number of farmers ________ become workers or businessmen, so the number of farmers

that ________ working in the fields is decreasing. [ ]

A. have; is

B. has; are

C. have; are

D. has; is

骨折患者功能锻炼的原则正确的是（）

A.伤后1～2周以内患肢肌肉的舒缩运动为主

B.伤后1～2周内以骨折处远近侧关节运动为主

C.伤后2～3周后以重点关节为主的全身活动

D.伤后2～3周后以患肢肌肉的舒缩运动为主

E.伤后6～8周后以骨折处远近侧关节运动为主