远期结售汇的交割方式有哪些？（）
A、提前交割
B、到期前展期
C、到期部分交割
D、分批交割
参考答案：A, B, C, D
My family ________ a big family. My family ________ all here. [ ]
A. is; is
B. are; are
C. is; are
D. are; is
冠心病二级预防的五个方面有哪些内容？
