下列属于女性避孕方法的是（）
A.口服避孕药
B.输卵管结扎
C.节育环
D. * * 避孕药环
参考答案：A, B, C, D
-----Why ________ you come and play basketball with us?
-----Because I have lots of homework to do.
A．not you
B．not
C．not to
D．don’t
细菌性肺炎以________受累为主；而病毒性肺炎以_______受累为主。
