- UID
- 862925
- 在线时间
- 小时
- 注册时间
- 2013-3-4
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time.
(A) year, and they cost the nation $50 billion in medical expenses and lost
(B) year and thus cost the nation $50 billion in medical expenses and lost
(C) year, so as to cost the nation $50 billion in medical expenses and lost
(D) year that costs the nation $50 billion in lost medical expenses and
(E) year, which thus cost the nation $50 billion in lost medical expenses and
答案是B !!
这个答案B的话 2个and 连接着3个词语也可以嘛?! |
|