咽拭子培养取标本的部位是()
A.颊部
B.扁桃体
C.舌腭弓,咽腭弓
D.咽部
E.舌四周
参考答案:B, C, D
— What were you up to when your parents came in?
— I ____ for a while and ____ some reading.
A.was playing; was going to do
B.played; did
C.had played; was going to do
D.had played; did
我国的可再生能源规模大、分布集中,需要()。
A.集中开发
B.规模外送
C.大范围消纳
D.智能化调配