化简与计算：(每小题4分,共12分)①②③-八年级数学

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• Would you please keep silent? The weather report and I want to listen. A．is broadcast B．has been bro
• 一Did he notice you enter the classroom?一I don’t think so．He _______ to the radio with his eyes shut·
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• 下列各式中计算正确的是（）A．2+3=5B．32-2=22C．32+42=3+4=7D．(-4)(-16)=-4×-16=（-2）×（-4）=8-数学
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• Mr. Black _____ for Shanghai in a few days. Do you know when the earliest plane _____ on Sunday. A．l
• He is a kind-hearted boy and he will come to the Old Folks' Home whenever __________.A．he is co
• He _____ football regularly for many years when he was young.A．played B．was playing C．has played D．h
• The fact that so many people still smoke in public places ______ we may need a nationwide campaign t
• 在数轴上画出表示的点。(3分)-八年级数学
• 下列计算中,正确的有()①②③④A．0个B．1个C．2个D．3个-八年级数学
• The number of foreign students attending Chinese universities ______ rising steadily since 2009. A．i
• 下列计算正确的是A．2＋4＝6B．＝4C．÷＝3D．＝－3-九年级数学
• 下列二次根式中，与是同类二次根式的是A．B．C．D．-九年级数学
• —Did you notice my little son just now? —No, Mrs Black. I ______ computer games.A．playB．am playingC．
• 二次根式有意义，则x的取值范围是A．x≠3B．x＝3C．x≥3D．x＜3-九年级数学
• The doorbell had been ringing for several minutes before it ______. A answered B had answered C was
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• （1）计算：（2）已知：，求的值．-八年级数学
• 9的算术平方根是A．3B．－3C．81D．－81-八年级数学
• 下列各式中，最简二次根式是（）A．B．C．D．-九年级数学
• They became friends again that day. Until then, they _____ to each other for nearly two years.A．won&
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• 使有意义的的取值范围是（）A．B．C．D．-八年级数学
• I ______ see Sarah ______ her mother . They two look so much alike .A．will ; thinking aboutB．never ;
• 化简：①0.5+12-(13-412)；②5x-239x+6x4．-数学
• We were listening closely to the lecture yesterday evening when suddenly the light ________.A．had be
• ——This letter is in Japanese, and I don’t speak a word of Japanese. Can you help me? ——Sure. I _____
• 已知，则2a+3b=_____-八年级数学
• The mother didn't know who the glass because it happened when she was out.A．breakB．has brokenC．
• So far this year we ______ a fall in house prices by between 5 percent and 10 percent.A．sawB．seeC．ha
• 的值等于（）A．3B．C．D．-八年级数学
• —Can I join the club, Dad?—You can when you _____ a bit older.A．getB．will getC．are gettingD．will ha
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• 计算515+1220-5445+45的值是（）A．4B．25C．-325D．925-数学
• 已知实数x、y满足，求6x-y的平方根-八年级数学
• 已知x、y为实数，且，则=________.-八年级数学
• Mr. Lin ______ when I go to see him on Sundays. A．is always workingB．was always working C．always wor
• When the old man ______ to walk back to his house, the sun itself behind the mountain.A．started; had
• They would __if food was difficult to find, so they celebrated when they had food.A．killB．disappear
• .Three-fourths of the buildings ______.A．was destroyedB．is destroyedC．were destroyedD．has been destr
• 16的算术平方根是____-八年级数学
• 下列各式计算正确的是（）A．2+3=5B．2+22=22C．32-2=22D．12-102=6-5-数学