常效避孕针避孕率可达
A.96%~98%B.98%C.99%D.99.7%E.99.95%
参考答案:B
解析: 常效避孕针用法为每月注射1次,有效率达98%。
—I’m sorry for being late, Miss Green. —___________.
A.That's right
B.You are welcome
C.It doesn't matter
D.You should be sorry