(多选题)15: 世界经济的三要素是（）
A: 人类
B: 自然资源
C: 生态环境
D: 社会环境
1.(单选题)—I'vegotthesystemrunning,butIcan'topenmyfile. — A.Let me see if I ca...
1.(单选题)—Dad,thisismyroommate,Andrea. —_________________ A.Hello, Andrea. I'...
1.(单选题)—Doyouhaveanyplansfortomorrowmorning — A.I'm sorry, but I have anoth...
1.(单选题)—Doyouhaveanyplansfortomorrowmorning — A.I'm sorry, but I have anoth...
1.(单选题)— —I'mnotsurewhatI'lldo.IhopetowatchTVandenjoymyself. A.What are you...
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