1/5单选题
难度：
1.已知方程组
，则
的值为（ ）
，则的值为（ ） | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- IOaKiuesrOS6jOS4quaWueeoi+S5mOS7pTI=
- 提示2：
- IOWIqeeUqOWKoOWHj+a2iOWFg+azleaxguino+W+l+WIsDxpbWcgd2lkdGg9MjggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvNjgvckJBQ0ZGTU1XRUdTVV9ocEFBQUJlSEhxNC1zMjUxLnBuZyI+55qE5YC8
- 提示3：
- IOWGjeWwhjxpbWcgd2lkdGg9NyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy81Ni9yQkFDRTFNTVdFR2hHUTV6QUFBQkd5ZUxZLWc0OTgucG5nIj7kuI48aW1nIHdpZHRoPTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvNTYvckJBQ0UxTU1XRUhnaFJPQ0FBQUJMMDdQRnlnNDg1LnBuZyI+55u45Yqg
正确答案：RA==
PGRpdj7op6PvvJo8aW1nIHdpZHRoPTkwIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIzLzU2L3JCQUNFMU1NV0VHQng5bmdBQUFEYVhaVXU4UTgxNS5wbmciPjwvZGl2PjxkaXY+4pGhw5cy5b6X77yMMngrNnk9MTDikaLvvIw8YnI+4pGiLeKRoOW+l++8jDV5PTXvvIw8YnI+6Kej5b6XeT0x77yMPGJyPuaKink9MeS7o+WFpeKRoOW+l++8jDJ4KzE9Ne+8jDxicj7op6Plvpd4PTLvvIw8YnI+5omA5Lul77yM5pa556iL57uE55qE6Kej5pivPGltZyB3aWR0aD0zOSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8yMy81Ni9yQkFDRTFNTVdFR1Q5QkxnQUFBQ0ZYaVU3UUU1ODgucG5nIj48L2Rpdj48ZGl2PuaJgOS7pe+8jDxpbWcgd2lkdGg9MTA3IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzAwLzY4L3JCQUNGRk1NV0VHaVlNX2pBQUFDSEZjT2NJODE4Mi5wbmciPi4gPGJyPuaVhemAiUQuIDwvZGl2Pg==
2/5单选题
难度：
2.二元一次方程组
的解为（ ）
的解为（ ） | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- IOS4pOS4quaWueeoi+ebuOWKoO+8jOWNs+WPr+WOu+aOiXk=
- 提示2：
- IOaxguW+l3jnmoTlgLzvvIzov5vogIzliKnnlKjku6PlhaXms5XmsYLlvpd4
正确答案：QQ==
PGRpdj7op6PvvJo8aW1nIHdpZHRoPTk5IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIzLzU2L3JCQUNFMU1NV0Q2RDVsa1JBQUFEc0hoMnhVczMwNC5wbmciPjwvZGl2PjxkaXY+4pGgK+KRoeW+l++8mjV4PTE177yMPGJyPuino+W+l++8mng9M++8jDxicj7miop4PTPku6PlhaXikaDlvpfvvJp5PTHvvIw8YnI+5pa556iL57uE55qE6Kej5piv77yaPGltZyB3aWR0aD0zOSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy81Ni9yQkFDRTFNTVdENndlLUZHQUFBQ0dqaEVybEk1MDEucG5nIj48L2Rpdj48ZGl2PuaVhemAiUE8L2Rpdj4=
3/5单选题
难度：
3.已知方程组
，则
的值是（ ）
，则的值是（ ） | A | 1 |
| B | |
| C | 0 |
| D | 2 |
- 提示1：
- IOino+aWueeoi+e7hO+8jOaxguWHunjjgIF555qE5YC8
- 提示2：
- IOaIluinguWvn+S4pOS4quaWueeoi++8jOebtOaOpei/kOeUqOWHj+azleaVtOS9k+axguW+l3gteeeahOWAvA==
正确答案：QQ==
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
4/5单选题
难度：
4.二元一次方程组：
的解为（ ）
的解为（ ） | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- 55SxPGltZyB3aWR0aD01MCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wMC82OC9yQkFDRkZNTVdFU2phdUpBQUFBQnRnUWo4NWc5NTgucG5nIj7lvpfliLA8aW1nIHdpZHRoPTU2IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzAwLzY4L3JCQUNGRk1NV0VmeGpQZ3BBQUFCdXd1ZUltazU1My5wbmciPuKRog==
- 提示2：
- IOeUseKRouWPmOW9ouS4ujxpbWcgd2lkdGg9NTYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvNTcvckJBQ0UxTU1XRWVoYzZ1OUFBQUJud0k5OFM0OTU5LnBuZyI+LOWGjeS7o+WFpTxpbWcgd2lkdGg9MTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvNjgvckJBQ0ZGTU1XRWVTTDNOd0FBQUJaQXNSNmtrODg1LnBuZyI+5rGC5Ye6PGltZyB3aWR0aD0zMyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy81Ny9yQkFDRTFNTVdFZno0UC1rQUFBQmdFMGZKN3MwMzEucG5nIj4=
- 提示3：
- IOWwhjxpbWcgd2lkdGg9MzMgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvNTcvckJBQ0UxTU1XRWZ6NFAta0FBQUJnRTBmSjdzMDMxLnBuZyI+5Luj5YWl4pGi77yM5rGC5Ye6PGltZyB3aWR0aD03IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzIzLzU2L3JCQUNFMU1NV0VHaEdRNXpBQUFCR3llTFktZzQ5OC5wbmciPg==
正确答案：RA==
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
5/5单选题
难度：
5.解方程组①
；②
；③
；④
比较适宜的方法是（ ）
；②；③；④比较适宜的方法是（ ） | A | ①②用代入法，③④用加减法 |
| B | ②③用代入法，①④用加减法 |
| C | ①③用代入法，②④用加减法 |
| D | ②④用代入法，①③用加减法 |
- 提示1：
- IOS7o+WFpea2iOWFg+azleWNs+eUqOWFtuS4reS4gOS4quacquefpeaVsOihqOekuuWPpuS4gOS4quacquefpeaVsO+8jOWGjeS7o+WFpeWFtuS4reS4gOS4quaWueeoi++8jOi9rOWMluS4uuS4gOWFg+S4gOasoeaWueeoi++8jOi/m+iAjOaxguino++8mw==
- 提示2：
- IOWKoOWHj+a2iOWFg+azleWNs+WwhuWFtuS4reS4gOS4quacquefpeaVsOeahOezu+aVsOWMluS4uuebuOWQjOaXtu+8jOeUqOWKoOWHj+azleWNs+WPr+i+vuWIsOa2iOWFg+eahOebrueahO+8jOi9rOWMluS4uuS4gOWFg+S4gOasoeaWueeoiy4=
- 提示3：
- IOmSiOWvueWFt+S9k+eahOaWueeoi+e7hO+8jOimgeWWhOS6juinguWvn++8jOS7juiAjOmAieaLqeaBsOW9k+eahOaWueazlS4=
正确答案：Qw==
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