病人心肺复苏后，脑复苏的主要措施是（）。
A.维持有效的循环
B.确保呼吸道通畅
C.降温和脱水疗法
D.加强基础护理
E.治疗原发疾病
参考答案：C
If the building project _____ by the end of this month is delayed, the construction company will be fined. [ ]
A. being completed
B. is completed
C. to be completed
D. completed
Rh阳性是指红细胞膜上含有（）
A.C抗原
B.A抗原
C.D抗原
D.E抗原
E.B抗原
