二战后初期，世界呈现出“不战不和”的“冷战”局面。“冷战”时代开始的标志是（    ）

① What are you doing? ____     A. No，she isn't.

② What is your mum doing? ____     B. Yes I am.

③ Can I use your pen? ____     C. I'm cleaning my room.

④ Is Sarah reading a book? ____     D. She is cooking fish.

⑤ Are yoy doing homework? ____     E. Sure.

“风定花犹落，鸟鸣山更幽”形象地表达了动和静的辩证关系是（    ）

潮平两岸阔，风正一帆悬。____，____。（王湾《次北固山下》）