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- 1已知梯形的上底a二3.6米,下底b二5.2米,高h二6米.求它的面积s.
- 2How would you get rid of your stress in daily life?求情景对话
- 3化学式为C6H12的烃分子,有多种同分异构体.对于其中主链为4个碳原子、只有一个支链的烯烃,下列说法不正确的是:
- 4We can live through these months only by ____ too much money.
- 5there are many people helping me in my life.2 there are many people to help me in my life谁对,WHY
- 6能被2整除的最大三位数是( ) 能被5整除的最小两位数是( )
- 7---Why don't we take a little break?---Don't we just have ____?A.it B.that C.one D.this
- 8I haven't seen Grace for a long time.——I haven't seen her_.A.other B.too C.either D.instead
- 9直角坐标平面上三点A(1,2)、B(3,-2)、C(9,7),若E、F为线段BC的三等分点,则AE•AF=_.
- 10一个分数约分后是3分之2,如果这个分数的分子减去18.分母减去22,可以得到一个新的分数.它等于5分之3,那