医学心理学研究的主要内容那个有()
A.心理障碍
B.心身疾病
C.医患关系
D.心理卫生
参考答案:A, B, C, D
把4.313131…写成简便形式是______.
China’s economy expanded 8.1 percent in the first quarter from a year earlier,___the slowest pace in almost three years.
A. marking
B. to mark
C. having marking
D. marked