_____ different life today is _____what it was 30 years ago! [ ]A. What; from B. How; from C. How; w

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• Be careful that you don't set the fireworks _____ by mistake. [ ]A. down B. out C. back D. off
• — What's your first impression ____ Mrs Wang?— She looks serious. I think she'll be strict
• There is not much time left; so I will tell you about it ______. [ ]A. in detail B. in brief C. in g
• _____sustainable development, measures are being drafted to control rising prices. [ ]A. For the sak
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• To enjoy the scenery, Irene would rather spend long hours on the train _____ travel by air. [ ]A. as
• Although _____ my opinion, the old professor didn't come up with his own. [ ]A. against B. on C
• Global warming pushes the temperature higher _____January in China. [ ]A. with B. forC. over D. in -
• — How amazing it is that astronauts are exploring outer space!— It's a challenge, I guess, ____
• She felt completely _____ during the vacation but now she has to go back to work again. [ ]A. in ang
• _____ entering the house, he found his house broken into.[ ]A. At B. In C. UponD. By -高一英语
• It's not a good idea to spend your income _____. [ ]A. in general B. in defenceC. in advance D.
• _____ cleaning the yard and making up the beds for the old, we also read newspapers for them and had
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• _____the bad weather they didn't go for a picnic. [ ]A. BecauseB. Because of C. If D. Unless -高
• 短文改错。 对标有题号的每一行做出判断：如无错误，在该行右边横线上划一个勾（√），如果有错误（每行只有一个错误），则按下列情况改正：该行多一个词：把多余的词用斜线（）划掉，-高三英语
• The law passed _____ the retirement of the public. [ ]A. in answer to B. in response toC. in return
• If a shop has chairs _____ women can park their men, women will spend more time in the shop. [ ]A. t
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• 下面合并同类项正确的是[]A．3x+3y=6xyB．2m2n﹣m2n=m2nC．4+5ab=9abD．7x2﹣5x2=2-七年级数学
• 合并同类项（1）2x2+1﹣3x+7﹣3x2+5x（2）7xy﹣x2+2x2﹣5xy﹣3x2-七年级数学
• Imagine life as a game _____you are playing with four balls. You name them-work, family, health, and
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• 下列各式中，合并同类项正确的是[]A．2x+x=2x2B．2x+x=3xC．5a2﹣3a2=2D．2x+3y=5x-七年级数学
• 合并同类项：①a﹣2a﹣4a=（），②a2﹣2（ab﹣b2）﹣b2=（）．-七年级数学
• 下列合并同类项的结果正确的是[]A．a+3a=3a2B．3a﹣a=2C．3a+b=3abD．a2﹣3a2=﹣2a2-七年级数学
• 下列各式中，合并同类项正确的是[]A．2x+x=2x2B．2x+x=3xC．5a2﹣3a2=2D．2x+3y=5x-七年级数学
• 下列各式中，正确的是[]A．x2y﹣2x2y=﹣x2yB．2a+3b=5abC．7ab﹣3ab=4D．a3+a2=a5-七年级数学
• 下列各式中，正确的是[]A．x2y﹣2x2y=﹣x2yB．2a+3b=5abC．7ab﹣3ab=4D．a3+a2=a5-七年级数学
• 合并同类项：-七年级数学
• 下列合并同类项中，错误的个数有（1）3x﹣2y=1（2）x2+x2=x4（3）3mn-3mn=0（4）5ab2﹣4b2a=ab2[]A．1个B．2个C．3个D．4个-七年级数学
• -七年级数学
• 已知y1=6-x，y2=2+7x，若①y1=2y2，求x的值；②当x取何值时，y1比y2小-3；③当x取何值时，y1与y2互为相反数？-数学
• 合并同类项：8a﹣2a2+11+3a+4a2﹣5+ab．-七年级数学
• 如图，两条直线l1和l2的交点坐标可以看作下列方程组中的解（）A．y=2x+1y=x+2B．y=-x+3y=3x-5C．y=-2x+1y=x-1D．y=-2x+1y=x+1-数学
• 作出函数y=2x-4的图象，并根据图象回答下列问题：（1）当-2≤x≤4时，求函数y的取值范围；（2）当x取什么值时，y＜0，y=0，y＞0；（3）当x取何值时，-4＜y＜2．-数学
• 小亮用作图象的方法解二元一次方程组时，在同一直角坐标系内作出了相应的两个一次函数的图象l1、l2，如图所示，他解的这个方程组是（）A．y=-2x+2y=12x-1B．y=-2x+2y=-xC．y=3x
• 下列合并同类项的结果正确的是[]A．a+3a=3a2B．3a﹣a=2C．3a+b=3abD．a2﹣3a2=﹣2a2-七年级数学
• 下列各式中，合并同类项正确的是[]A．2x+x=2x2B．2x+x=3xC．5a2﹣3a2=2D．2x+3y=5x-七年级数学
• 已知多项式合并后的结果为零，则下列说法正确的是[]-七年级数学
• 去括号，合并同类项：﹣2（a3﹣3b）+（﹣b2+a3）．-七年级数学
• 在同一直角坐标系内作出一次函数y=-32x-12和y=-23x-73的图象，直线y=-32x-12与直线y=-23x-73的交点坐标是多少？你能据此求出方程组3x+2y=-12x+3y=-7的解吗？-