题干
.
That was the first time I _______ there and I was impressed by the friendly people very much.
That was the first time I _______ there and I was impressed by the friendly people very much.
A：go
B：was going
C：had gone
D：have gone
答案(点此获取答案解析）
C
已知 、 与竖直方向的夹角分别为 、 ，不计空气阻力，则（ ）