1/7单选题
难度：
1.多项式
的次数及最高次项的系数分别是（ ）
的次数及最高次项的系数分别是（ ） | A | 3，-3 |
| B | 2，-3 |
| C | 5，-3 |
| D | 2，3 |
- 提示1：
- IOWkmumhueW8j+S4reasoeaVsOacgOmrmOeahOmhueeahOasoeaVsOWPq+WBmuWkmumhueW8j+eahOasoeaVsA==
正确答案：QQ==
PGRpdj7op6PvvJo8aW1nIHdpZHRoPTEwNCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wMC82OC9yQkFDRkZNTVdKM0JXOFFiQUFBQ0tsYk5hQ3cxNjAucG5nIj7nmoTmnIDpq5jmrKHpobnmmK88aW1nIHdpZHRoPTQ0IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzAwLzY4L3JCQUNGRk1NV0oyUzV0ZHpBQUFCcW5WWlVLSTM2MC5wbmciPu+8jOasoeaVsOaYrzPvvIzmiYDku6XlpJrpobnlvI/nmoTmnIDpq5jmrKHmlbDmmK8zPC9kaXY+
2/7单选题
难度：
2.
关于多项式
，下列说法正确的是（ ）
| A | 它是三次四项式 |
| B | 它是关于字母y的降幂排列 |
| C | 它的一次项是 |
| D |
|
与
是同类项- 提示1：
- PHA+5aSa6aG55byP5qyh5pWw5piv5aSa6aG55byP5Lit5qyh5pWw5pyA6auY55qE6aG555qE5qyh5pWw77yM6aG55pWw5piv5omA5pyJ5Y2V6aG55byP55qE5Liq5pWwPC9wPg==
正确答案：Qg==
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
3/7单选题
难度：
3.
多项式
的项数和次数分别为（ ）
| A | 4、3 |
| B | 5、4 |
| C | 5、3 |
| D | 4、4 |
- 提示1：
- PHA+5aSa6aG55byP5qyh5pWw5piv5aSa6aG55byP5Lit5qyh5pWw5pyA6auY55qE6aG555qE5qyh5pWw77yM6aG55pWw5piv5omA5pyJ5Y2V6aG55byP55qE5Liq5pWwPC9wPg==
正确答案：Qw==
PGRpdj7op6PvvJrov5nkuKrlpJrpobnlvI/nmoTpobnmlbDlkozmrKHmlbDliIbliKvkuLo15ZKMMzwvZGl2Pg==
4/7单选题
难度：
4.对于多项式 
，下列说法中不正确的是（ ）
，下列说法中不正确的是（ ） | A | 它是关于t的二次三项式 |
| B | 它是按t降幂排列 |
| C | 它的常数项是﹣1 |
| D | 二次项的系数是2 |
- 提示1：
- IOaNruWkmumhueW8j+eahOasoeaVsOWSjOmhueaVsOeahOWumuS5ieWNs+WPr+WIpOWumg==
正确答案：RA==
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
5/7单选题
难度：
5.若多项式 
是关于x的二次三项式，则m的值是（ ）
是关于x的二次三项式，则m的值是（ ） | A | 2 |
| B | -2 |
| C | 2或-2 |
| D | 以上答案均不对 |
- 提示1：
- IOagueaNruWkmumhueW8j+asoeaVsOWPiumhueaVsOeahOWumuS5iQ==
正确答案：QQ==
PGRpdj7op6PvvJo8aW1nIHdpZHRoPTEyOSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy81Ny9yQkFDRTFNTVdMMmhoNG12QUFBQzNIRVRFTzg0MzYucG5nIj7mmK/lhbPkuo5455qE5LqM5qyh5LiJ6aG55byPPC9kaXY+PGRpdj7miYDku6U8aW1nIHdpZHRoPTEyMyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy81Ny9yQkFDRTFNTVdMMlI0NWRaQUFBQ0ZnZ1pvTVExNjYucG5nIj7op6Plvpc8aW1nIHdpZHRoPTM4IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzAwLzY5L3JCQUNGRk1NV0wzQlo2REVBQUFCV0FEY3pwYzIzNi5wbmciPjwvZGl2Pg==
6/7单选题
难度：
6.A是三次多项式，B是四次多项式，那么（B﹣A）是（ ）
| A | 一次多项式 |
| B | 四次单项式 |
| C | 四次单项式或多项式 |
| D | 三次多项式 |
- 提示1：
- IOagueaNruWkmumhueW8j+asoeaVsOeahOWumuS5ieaxguinow==
正确答案：Qw==
PGRpdj7op6PvvJrnlLHkuo7lpJrpobnlvI/nmoTmrKHmlbDmmK/igJzlpJrpobnlvI/kuK3mrKHmlbDmnIDpq5jnmoTpobnnmoTmrKHmlbDigJ3vvIw8L2Rpdj48ZGl2PuWboOatpELvuaNB5b+F5Li65Zub5qyh5byPLiDlvZPlm5vmrKHlvI/nmoTlkITpobnpmaTljrvmnIDpq5jpobnlhbbkvZnlkITpobnkuI5B55u45ZCM5pe277yM5Li65Y2V6aG55byP77yM5ZCm5YiZ5Li65aSa6aG55byPPC9kaXY+
7/7单选题
难度：
7.若A与B都是二次多项式，则A﹣B：（1）一定是二次式；（2）可能是四次式；（3）可能是一次式；（4）可能是非零常数；（5）不可能是零. 上述结论中，不正确的有（ ）个
| A | 5 |
| B | 4 |
| C | 3 |
| D | 2 |
- 提示1：
- IOWQiOW5tuWQjOexu+mhueaXtuWPquaYr+aKiuezu+aVsOebuOWKoOWHj++8jOWtl+avjeWSjOWtl+avjeeahOaMh+aVsOS4jeWPmO+8jOW9k+S6jOasoemhueeahOezu+aVsOS6kuS4uuebuOWPjeaVsOaXtu+8jOWQiOW5tuWQjue7k+aenOS4ujAu
正确答案：Qw==
PGRpdj7op6PvvJriiLXlpJrpobnlvI/nm7jlh4/vvIzkuZ/lsLHmmK/lkIjlubblkIznsbvpobnvvIw8L2Rpdj48ZGl2PuiAjOWQiOW5tuWQjOexu+mhueaXtuWPquaYr+aKiuezu+aVsOebuOWKoOWHj++8jOWtl+avjeWSjOWtl+avjeeahOaMh+aVsOS4jeWPmO+8jDwvZGl2PjxkaXY+4oi057uT5p6c55qE5qyh5pWw5LiA5a6a5LiN6auY5LqOMuasoe+8jDwvZGl2PjxkaXY+5b2T5LqM5qyh6aG555qE57O75pWw55u45ZCM5pe277yM5ZCI5bm25ZCO57uT5p6c5Li6MO+8jDwvZGl2PjxkaXY+5omA5Lul77yIMe+8ieWSjO+8iDLvvInvvIg177yJ5piv6ZSZ6K+v55qEPC9kaXY+