化简：①18-8+50②18-(π-1)0-2cos245°+(14)-1-数学

更多内容推荐

• They have lived in this village________several years ago.A．forB．atC．since D．/-英语
• You must be aware ______the fact that it is ____ great importance to learn English well.A．to; ofB．of
• 计算：|-3|+(5-1)0-4+(-2)2．-数学
• Although Linda tried hard in the exam, she did ______ than her brother. A．more badlyB．much betterC．m
• —How _____ can we get to the park?—In twenty minutes. [ ]A. long B. far C. oftenD. soon -高三英语
• I bought this car _______ because it was beautiful in shape and color. But now it is out of shapeand
• --- The earthquake last night was really terrible. --- ______, no people were injured or killed, and
• 下列计算中，正确的是（）A．（-1）0=-1B．（-1）-1=1C．3a-3=3a3D．（-x）5÷（-x）-3=-x-2-数学
• 计算：（1）348-913+312（2）4+(π-2)0-|-5|+(-1)2012+(13)-2．-数学
• 计算：63+(5-π)0-12+(12)-1-数学
• To save the drowning child, the boy plunged into the icy water without hesitation, _____ his own saf
• You require too much ______ me. It’s beyond my power.A．atB．inC．ofD．with-英语
• Make sure to turn off the gas after you take a bath, which would ___ cause danger.A．thereforeB．someh
• There is ____ as a free dinner in this world, as the saying goes, “No pains, no gains.”A．no such a g
• 句型转换(每空一词)。 1. The storybook on the top shelf is so high that none of the children can reach it.The
• There's a rumor________that he is going to resign.A．in the airB．on the airC．into thin airD．in t
• （1）计算：(12)-1+8+|1-2|0-2sin60°-tan60°．（2）解方程：2(x+1)2x2+x+1x-6=0．-数学
• –It’s too late to go to the football match now; ______,it’s being to rain. A．howeverB．besidesC．on th
• —I _____ agree with what he said. Actually I feel what he said is much to the point and makes good s
• Mike was usually so careful, ______this time he made a small mistake.A．yetB．stillC．evenD．thus-英语
• 计算：（1）30×32223÷2212；（2）18-22-82+(5-1)0．-数学
• She was knocked by a car and now is still .A．down; in dangerB．off; dangerousC．down; dangerousD．off;
• 下列运算正确的是（）A．（-2）0=1B．（-2）-1=2C．4=±2D．24×22=28-数学
• I began to feel ________ in the new school when I saw some familiar faces. [ ]A. at homeB. at heartC
• I can spare you only a few minutes. Just tell me ____what happened.A．personallyB．spirituallyC．thorou
• 计算：2cos245°-(tan60°-2)2-（sin60°-1）0+(12)-2．-数学
• _____ the satellites, football games come to us_____ on TV. [ ]A. Thanks for; alive B. Thanks to; li
• Most of the students got a favourable impression________the new teacher，and they were especially im
• —You know，Bob is a little slow ________understanding.—So I have to be patient________him.A．in；withB．
• All these new students will be divided ________ 12 classes. Then these classes will be divided _____
• My father likes playing golf；he's really enthusiastic________it.A．byB．withC．aboutD．on-英语
• However _____ they are designed, pens should function as a tool to write with.A．differB．differenceC．
• -高三英语
• Don’t be angry _________ me for not having written. I was really too busy.A．aboutB．withC．toD．for-英语
• 计算：(-1)2004+(12)-2×(3)0-2sin30°．-数学
• Drunk driving used to occur _____, but now it is under control．A．frequentlyB．generallyC．practicallyD
• 计算：（1）12-（-2009）0+（12）-2+|1-3|；（2）（2-1）2-（3+22）．-数学
• 18+(2+1)-1+(-2)-2．-数学
• 下列各题的计算结果中有三个是相同的，那么不同的一个是（）A．102+100+10-2B．（-10）2+（-10）0+（-10）-2C．（-10）2+（-100）+（-10-2）D．(110)2+(11
• 若（a﹣2）a+1=1，则a=_________．-七年级数学
• 计算：（-3.14）0=（）。-八年级数学
• New reports say peace talks between the two countries have broken ____with no agreement ________. A．
• Playing on a frozen sports field sounds like a lot of fun. Isn't it rather risky, ____?A．either
• 计算：4cos45°-（-3）2-（π-3）0-3-tan30°-数学
• 在式子x-1x-3+(x-2)0中，x的取值范围是______．-数学
• It's _____ hot here. We can't stay here for a long time. [ ]A. much B. very much C. much t
• I've never read a better book than this one._____, it is the best one that I have ever read. [
• There, a big memorial has been built ____ him, who devoted himself to the poor. [ ]A. in need of B.
• －If I’m not mistaken, your birthday is coming up. Has your brother sent you anything?－Not yet. He ne
• 62-18-（12）0-数学