——Would you like to come to my house for dinner tonight?——I'd love to , _____ I have lots of work to do .
A:so
B:or
C:and
D:but
一艘轮船从甲港开往乙港,去时顺水,每小时行24千米,15小时到达.返回时逆水,速度降低了25%,多少小时返回甲港?(用比例解)
I am ____ ____ finance.
在夏天会看到冰棍冒出白色的“气”,这是因为 ( )