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【单选题】
行星 质量 (地球为1) 体积 (地球为1) 公转 周期 自转周期 赤道面与轨道 面之间交角 地球 1.00 1.00 1 年 23 时56分 23 °26′ 火星 0.11 0.15 1.9 年 24 时37分 23 °59′ 液态水的存在是地球生命起源和发展的重要条件之一,下列叙述中与地球“液态水存在”有密切关系的是 1地球上昼夜更替的周期较适中 2地球的质量和体积适中 3地球处于一种比较安全的宇宙环境之中 4地球与太阳的距离比较适中A.
①④
B.
①②
C.
②③
D.
②④
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【单选题】--- Would you like to collect _____ with us in the park this Saturday? --- Yes, I’d love to. Let’s make it clean.
A.
water
B.
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trees
D.
rubbish
【简答题】Lily: Hi, I am Lily from ABC Company. Chuck: Hello, I am Chuck. Nice to meet you! Lily: Nice to meet you, too! We provide excellent (1)_______ in my store. Would you like to have a look? Chuck: Yes. S...
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【单选题】Would you like some more coffee?
A.
Thank you! It's kind of you
B.
Great! Well done
C.
Well, it doesn't matter
D.
OK. It's up to you
【简答题】实验一 信号的卷积.docx 数据分析: 提交可行的程序及波形!
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