题目

阅读下面短文, 从短文后各题所给的A、B、C和D四个选项中, 选出可以填入空白处的最佳选项。 Many people enjoy taking trips by themselves.Unluckily, they do not always have the best 1. Instead, peopleshould consider group tours. Taking a group tour is a wise choice for people to2themselves. First, group tours plan travelers' routes, sopeople don't have to 3where they aregoing next or how they are getting there. They can just 4and enjoy theirtrip. 5, my family oncetook a group tour to China. The travel agency (旅行社)6everything forus. We just looked at the sche 算一算下面各题 12×42＝　　24×63＝　　48×42＝ 21×24＝　　42×36＝　　84×24＝