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【简答题】
农业对国民经济的贡献表现在哪些方面?
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【多选题】下列海关监管起止时间描述正确的是（ ）
A.
一般进口货物，自货物进境之时起至海关放行时止
B.
暂时进境货物，自货物进境时起至货物复运出境并销案止
C.
特定减免税货物，自货物进境之时起至海关监管年限届满或办结相关海关手续止
D.
保税加工进口货物，，自货物进境之时起至加工成品复运出境并核销时止
【单选题】听力原文：M: I wish i could be the person driving that new Cadillac instead of Barbara. W: Well, if you would budget your money more carefully, this wouldn't be a problem. Q: How does the woman feel about ...
A.
She thinks that he should plan his money more carefully.
B.
She thinks that he should buy a convertible.
C.
She thinks that he should ask Barbara for advice.
D.
She wants him to manage her money
【单选题】I wish I could be ________so that I could be able to sneak around and see things I would not normally be able to see.
A.
inaccurate
B.
inefficient
C.
ineffective
D.
invisible
【简答题】矩阵A,B能够相加必修具备什么条件? 矩阵A,B能够相乘必修具备什么条件? 举例说明矩阵乘法不满足消去律。
【简答题】I wish I (be) a bird.
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