My family and I had a(n) ________ trip in Taiwan because of the typhoon and rainstorm.
A:suitable
B:unpleasant
C:comfortable
D:Impatient
手机是靠 ____来传递信息的.如图9所示的光纤通信是利用了激光在纤维中经过多次 ____从一媏传到另一端.
My name is John. I am a pupil. I like to read books on Sundays. I live in a house beside the zoo. It's near the school. So I walk to school every day. Tom is my friend. He lives far from the school, so he goes to school by bus. He likes to play on the computer on Sundays.
分析下列的材料,回答问题:校园里有许多花草树木,有时发现树叶上有小毛毛虫,小毛毛虫往往给鸟类吃了;有时候还看到潮湿、富有有机质的土壤中钻出一两条蚯蚓,特别是下雨过后,蚯蚓纷纷爬出地面上来,却能引来一群蚂蚁把蚯蚓搬走;校园里的一块地里原来种了很多小树苗,过了一段时间,发现里面杂草丛生,长势超过了小树苗.