配套习题- 不等式基本性质的应用 -【青果学院】

1/5单选题

难度：

1.已知ab＜0，ab²＞0，且a+b＜0，则下列四个答案正确的是（　　）

A	＞-1
B	＜-1
C	＞1
D	0＜＜1

正确答案：QQ==

6Kej77ya4oi1YWLvvJww77yMPGJyPuKItGHvvIxi5byC5Y+377yMPGJyPuKItWFiPHN1cD4yPC9zdXA+77yeMO+8jDxicj7iiLRh5LiOYjxzdXA+Mjwvc3VwPuWQjOWPt++8jDxicj7lj4jiiLViPHN1cD4yPC9zdXA+77yeMO+8jDxicj7iiLRh77yeMCBi77ycMO+8jDxicj7iiLRhK2LvvJww77yMPGJyPuKItWLvvJww77yMPGJyPuKItDxpbWcgd2lkdGg9OSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wMC8zQi9yQkFDRkZOc2JyNlRWVGtXQUFBQlVxSlVDOXcyMDQucG5nIj7vvJ4tMe+8jDxicj7mlYXpgIlBLiA=

2/5单选题

难度：

2.下列不等式中变形正确的是（　　）

A	由x＜y，得xc＜yc
B	由x＞y，c≠0，得-＜−
C	由x＞y，得xc²≥yc²
D	由x＜y，得（1000-c）x＜（1001+c）y

正确答案：Qw==

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

3/5单选题

难度：

3.有下列四个命题：①若a＞b，则a+1＞b+1；②若a＞b，则a-1＞b-1；③若a＞b，则-2a＜-2b；④若a＞b，则2a＜2b. 其中正确的有（　　）个.

A	1
B	2
C	3
D	4

正确答案：Qw==

6Kej77ya4pGg44CB6IulYe+8nmLvvIzmoLnmja7kuI3nrYnlvI/nmoTmgKfotKgx77yMYSsx77yeYisx5q2j56Gu77ybPGJyPuKRoeOAgeiLpWHvvJ5i77yM5qC55o2u5LiN562J5byP55qE5oCn6LSoMe+8jGEtMe+8nmItMeato+ehru+8mzxicj7ikaLjgIHoi6Vh77yeYu+8jOagueaNruS4jeetieW8j+eahOaAp+i0qDPvvIwtMmHvvJwtMmLmraPnoa7vvJs8YnI+4pGj44CB6IulYe+8nmLvvIzmoLnmja7kuI3nrYnlvI/nmoTmgKfotKgx77yMMmHvvJ4yYu+8jOaVhemUmeivry4gPGJyPuWImeato+ehrueahOaciTPkuKrvvIzmlYXpgIlDLiA=

4/5单选题

难度：

4.已知a＞b，若c是任意实数，则下列不等式中总是成立的是（　　）

A	a+c＜b+c
B	a-c＞b-c
C	ac＜bc
D	ac＞bc

正确答案：Qg==

6Kej77yaQeOAgeKItWHvvJ5i77yMY+aYr+S7u+aEj+WunuaVsO+8jOKItGErY++8nmIrY++8jOaVheacrOmAiemhuemUmeivr++8mzxicj5C44CB4oi1Ye+8nmLvvIxj5piv5Lu75oSP5a6e5pWw77yM4oi0YS1j77yeYi1j77yM5pWF5pys6YCJ6aG55q2j56Gu77ybPGJyPkPjgIHlvZNh77yeYu+8jGPvvJww5pe277yMYWPvvJxiY++8jOiAjOatpOmimGPmmK/ku7vmhI/lrp7mlbDvvIzmlYXmnKzpgInpobnplJnor6/vvJs8YnI+ROOAgeW9k2HvvJ5i77yMY++8njDml7bvvIxhY++8nmJj77yM6ICM5q2k6aKYY+aYr+S7u+aEj+WunuaVsO+8jOaVheacrOmAiemhuemUmeivry4gPGJyPuaVhemAiUIuIA==

5/5单选题

难度：

5.如果a＞b，c＜0，那么下列不等式成立的是（　　）

A	a+c＞b+c
B	c-a＞c-b
C	ac＞bc
D	＞

正确答案：QQ==

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