A;___________city!B;yes,lots of tourists come to visit this city every year.A.how lively B.what a beautiful 应该选a\b
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A;___________city!B;yes,lotsoftouristscometovisitthiscityeveryyear.A.howlivelyB.whatabeautiful应该选a\b
A;___________city!B;yes,lots of tourists come to visit this city every year.A.how lively B.what a beautiful 应该选a\b
A;___________city!B;yes,lots of tourists come to visit this city every year.
A.how lively B.what a beautiful 应该选a\b
A;___________city!B;yes,lots of tourists come to visit this city every year.A.how lively B.what a beautiful 应该选a\b
选B吧,A选项是不是How lovely?
A;___________city!B;yes,lots of tourists come to visit this city every year.A.how lively B.what a beautiful 应该选a
(a+b).(a-b)
a/b-b/a
a+b>a-b,
a-b>a,a+b
计算a+b/b-a-b/b
-2a(a+b)+b(a+b)
化简|a|+|-b|-|a-b|-|a+b|
化简 |b|-|a|+|a-b|+|a+b|
[(a+b)(a-b)-(a-b)
(a+b)(a-b)-a-b因式分解
化简 |a-b|+|a+b|-|a-b|
因式分解 a(a+b)-b(a-b)
a(a+b)-b(a-b)
A*b/a>A ,那么a/b
a+b
|a+b|
a>,b