下列遗址中,反映原始农耕文化的是
①山顶洞人遗址②半坡遗址③河姆渡遗址④北京人遗址[ ]
A.①②
B.③④
C.②③
D.①④
答案:C
补全对话。
(一)
A: Hello! I need a stamp, please.
B: 1________ are you 2________ your letter?
A: I'm sending it to Shijiazhuang. 3________ 4________ is the stamp, please?
B: One yuan.
A: 5________.
(二)
A: 6________ I see that postcard, please?
B: Sure. 7________ you are.
A: 8________ much 9________ this postcard?
A: I'll 10________ nine, please.
当今社会,人类面临着_______、_______、_______等问题。我国是_______安全理事会常任理事国之一,也是某些世界性环境保护组织成员。