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【简答题】
（1）解方程：x 2 +2x-3=0 （2）解方程：3x 2 =6x-2．
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皮皮学刷刷变学霸
举一反三
【单选题】应付慢性应激的环境措施包括
A.
建立亲密朋友的支持网络，学会较多的交际手段和方法，学会肯定自我
B.
环境予以直接控制，改变不利环境，脱离应激环境
C.
寻求社会支持，改变不利环境，放慢生活节奏，学会肯定自我
【单选题】听力原文：M: Hi, Sue. Where have you been? W: Oh. Hi, Dan. I was just at the library. I have to hand in my biology paper tomorrow. M: Tomorrow? Oh, no, I thought it wasn't due till Monday. W: Oh. Don't wor...
A.
They're classmates.
B.
They're roommates.
C.
They're cousins.
D.
They're lab partners.
【单选题】在列写节点电压法时，自电导____，互电导____。下列说法正确的是____。
A.
恒为正，有正、负
B.
恒为正，恒为负
C.
有正、负，恒为负
D.
有正、负，恒为负
【单选题】应付慢性应急的环境措施包括？（）
A.
建立亲密朋友的支持网络，学会较多的交际手段和方法，学会肯定自我
B.
对环境予以直接控制，改变不利环境，脱离应激环境
C.
寻求社会支持，改变不利环境，放慢生活节奏，学会肯定自我
【单选题】听力原文：M: Hi, Sue. Where have you been? W: Oh. Hi, Dan. I was just at the library. I have to hand in my biology paper tomorrow. M: Tomorrow? Oh, no! I thought it wasn't due till Monday. W: Oh. Don't wor...
A.
They're classmates.
B.
They're roommates.
C.
They're cousins.
D.
They're lab partners.
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