值传递方式和地址传递方式都是在形参和实参之间传递数据，其区别在于值传递方式所传递的是______。
参考答案：参数值
—We are planning to have a casual get-together this Saturday or Sunday. Are you coming?
— ________. I’ve got rather a full day this weekend.
A．I hope so
B．Sounds great
C．I’m afraid not
D．You’d better not
