题干
- Can I help you, Sir?
- ______ apple and a glass of juice, please.
A：A
B：An
C：The
答案(点此获取答案解析）
B
- Can I help you, Sir?
- ______ apple and a glass of juice, please.
A：A
B：An
C：The
角的力
拉物块时，物块做匀速直线运动；当改用与水平方向成
角的力
推物块时，物块仍做匀速直线运动.若