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回答问题
It's almost 3 years ____ we met last time .A.until B.before
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Each time ____ they met they would talk long hours together
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It was ___ he came back from Africa that year ____ he met th
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It was ____ I met Mr.Smith in London A many yea
It was not clear at that time ____ we met again so soon.A.wh
( ) 15.It is a long time ____ we met last time in Shanghai.A
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I knew we would be friends ____ I met you on campus. A.the f
____ he met with the difficulty did he realize that our help
they will met at the same place ____ they met last week
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It was in that office ____ Alice once worked ____ they met e
27.It was in this classroom ____ I met my friend
It was on the National Day ____ she met with her separated s
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The park,____ we met with him,is very nice.A.where B.which C
英语选择题the young man ____ we met yesterday is our new math tea
I fell in lovewith her ____ I met her
I knew we would be friends ____ I met you on campus.
选择填空:I want to the cinema ____ I met an old friend today.
i thought her nice and honest ____ i met her ,中
it___ 5 years ____ we met again
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用伏安法测电池电阻的引起的系统误差怎么分析!求教
改错They sent many presents for the pupils
金属锡的原子核带有50个元电荷 有50个电子 请问这些电子总共带有多少库伦的电荷?
已知m+n=-2,mn=4,球2(mn-3m)-3(2n-mn)的值,
空气中的氧气比重的多少对人体有什么作用
精彩回答
如图,某数学兴趣小组在活动课上测量学校旗杆高度.已知小明的眼睛与地面的距离(AB)是1.7m,看旗杆顶部M的仰角为45°;小红的眼睛与地面的距离(45°)是1.5m,看旗杆顶部M的仰角为30°.两人相距23m且位于旗杆两侧(点B,N,D)在同一条直线上).请求出旗杆MN的高度.
地球公转的方向是______,地轴是倾斜的,它的空间指向保持______,永远指向______方向.
一个三位数除以9有余数,余数最大是几?最小是几?
A,B,C,D,E,F,G是初中化学中常见的物质
已知tana=3,求下列各式的值 1.sina+cosa/sina-cosa 2.sina.cosa 3.sin^2 a+sina.cosa