The secretary worked late into the night,_______ a long, speech for the president.A． to prepareB．was

更多内容推荐

• (2013·高考新课标全国卷Ⅱ)I got to the office earlier that day，________the 7∶30 train from Paddington.A．caught
• I wondered what difficulty he had _____ the plan.A．to carry outB．carrying outC．carried outD．with car
• 先化简，再求值：（1x-1+1）÷xx2-1，其中x=2．-数学
• 先化简，再求值x-1x2+x÷x2-2x+1x2-1-1x+x，其中x=2009．-数学
• 化简：(x-2x+2-x+2x-2)x2-2xx2-数学
• .______ to computer games, he had no time to go over his lessons. As a result, he failed in all subj
• 化简求值：（1）1x-1•x2-2x+1x+1，其中x=2；（2）(1x-1y)÷y-x3x2，其中x=2，y=3．-数学
• 计算：·-÷-八年级数学
• 计算：mm+3-6m2-9÷2m-3．-数学
• 计算：（1）4a-2+32-a+1a2-a-2；（2）a-4a2-9(1+10a-19a2-8a+16)÷1a-3；（3）已知：x2+x-1=0，求x(1-21-x)÷(x+1)-x(x2-1)x2-
• In this victory speech ________ before a huge crowd of his supporters, Obama declared that “Change h
• Most people prefer _____money______it .A．spending; to earningB．to be spending ; to be earningC．to sp
• 有这样一道题：“计算：x2-2x+1x2-1÷x-1x2+x-x的值，其中x=2012．”甲同学把“x=2012”错抄成“x=2021”，但他的计算结果也是正确的．这是怎么回事？你能给予合理的解释吗？
• 化简求值：（1）(3xx-1-xx+1)•x2-1x，其中x=2；（2）x-1x2-4x+4•x2-4x2-1，其中x=3．-数学
• (2013·高考新课标全国卷Ⅰ)The sunlight is white and blinding，________hard­edged shadows on the ground.A．be
• I got to the office earlier that day, ______ the 7:30 train from Paddington.A．caughtB．to have caught
• ________ in an atmosphere of simple life was what her parents wished for. A．The girl was educatedB．
• （1）解方程：2x2-2x-1=0；（2）先化简后求值：(x+1x2-4-2x+2)÷x-5x+2，其中x=2+2．-数学
• _______ confidence and patience, they failed to settle the difficult problem.A．Lack inB．Lacking ofC．
• The music, ____________ pleasant, was soon well received when it was taken to the stage.A．soundedB．b
• 化简：a2-42a÷(a2-2a-2a)，并指出a的取值范围．-数学
• In the job interviews, job applicants often find themselves ________ unexpected questions, some very
• (1-2x+1)2÷x-1x+1-数学
• 已知1m-1n=2，则代数式5mnm+7mn-n的值为______．-数学
• 化简：(2xx-1-xx+1)÷xx2-1．-数学
• 先化简再求值：x2-1x+1-x2+2x+1x2+x÷1x+1，其中x=-2．-数学
• 化简：（1）2aa2-4-1a-2（2）(x-2x+2+4xx2-4)÷1x2-4．-数学
• It rained heavily in the south， serious flooding in several provinces.A．causingB．having causedC．caus
• 先化简，再求值(xx-2-xx+2)÷4xx-2，其中x=2-2．-数学
• 先化简：3-xx-2÷(x+2-5x-2)，选择一个你喜欢的无理数，然后再求值．-数学
• Tom had no choice but _____ the classroom with his classmates.A．to cleanB．cleanC．cleaningD．cleans-英语
• ----Did the reference give the information you needed?----Yes, but it, I had to read it entirely. A．
• It is typical of students to stay up ________ deep into the night for the final exam.A．to readB．havi
• The long-lasting war, filled with blood and deaths, ended in people’s sadness, ______ no result.A．h
• He was close to______ in the accident.A．be killedB．being killedC．killedD．killing-高二英语
• 当x=-2时，分式11+x的值为（）A．1B．-1C．2D．-2-数学
• 先化简，再求值：x-yx÷(x-2xy-y2x)，其中x=2012，y=2013．-数学
• 观察下列各式：62-42=4×5，112-92=4×10，172-152=4×16，…，（1）你发现了什么规律？试用你发现的规律填空：512-492=4×______；752-732=4×．（2）请你
• The murderer was brought in, with his hands _____ behind his back. A．being tiedB．having tied C．to be
• 先化简，再求值：，其中a=1--九年级数学
• 有一道题目“先化简，再求值：(x+3x-3-6xx2-9)÷1x2-9，其中x=-7．”小明做题时把“x=-7”错抄成了“x=7”，但他的计算结果也是正确的，请你解释这是怎么回事？-数学
• 已知（a+1a-1）（11+a3-1）÷a31-a，其中a=99，求原式的值．-数学
• 已知x2-y2=xy，且xy≠0，求代数式x2y-2+x-2y2的值．-数学
• ----Can you attend tomorrow’s meeting?----I am sorry , but I will have too much work__________．A．to
• They wanted the house at the foot of the mountain ________ in a way to look pretty.A．buildB．to build
• 先化简：a2-b2a2+ab÷（a+2ab+b2a），当b=-1时，再从-3＜a＜2的范围内选取一个合适的整数a代入求值．-数学
• 计算题：（1）(3b24a3)2•(-32a2b)3；（2）12m-1m+n(m+n2m-m-n)；（3）1-(1-11-x)2÷x2-x+1x2-2x+1-数学
• 先化简再求值：(x-y-x2x+y)÷(2y2x2+2xy+y2)+x2-y2x-y，其中x≠y且x，y满足（x-y）（x+y-12）=0．-数学
• For Chinese Dream, many people dream of_______ a good chance for a better job.A．there isB．there to b
• An underwater hotel has opened in Africa，with its rooms＿on the bottom of a three－level floating buil