题目内容：
According to the text，why are test flights most dangerous?
参考答案：
答案解析：
单选题：According to the text，why are test flights most dangerous?
- 题目分类：英语
- 题目类型：单选题
- 号外号外：注册会员即送体验阅读点！
请回答第22题：（ ）
请回答第22题：（ ）
Which skirt do you like best，the white__________or the red ?
Which skirt do you like best，the white__________or the red ?
More and more people today__________．
More and more people today__________．
(7) __________
(7) __________
-How was your recent visit to Qingdao?-It was great．We visit
-How was your recent visit to Qingdao?-It was great．We visited some friends，and