,为什么B不是正确答案呢。这里A和B的意思都是一样,谢谢. A. they arrived at their destination B?请解释. their destination was arrived at 参看答案给的是A. After days of exhausting march they finally saw the high brown spire on the hilltop and they knew that ___
spaceship发射还有升空都是要be launched或者be sent up啦。
因为宇宙飞船肯定不能自己发射和升空的,需要依靠人的力量,所以是被动语态咯。
spaceship用得比较口语化,也比较常见吧。craft还有spacecraft就比较书面化了。