题干
- Could you please teach me ______ to give out “Red envelope“（红包） on WeChat ?
- Sure. Let me show you.
A：how
B：why
C：when
D：where
答案(点此获取答案解析）
A
- Could you please teach me ______ to give out “Red envelope“（红包） on WeChat ?
- Sure. Let me show you.
A：how
B：why
C：when
D：where
、免疫反应、信息传递和血型决定有密切关系的化合物是（ ）
