汪金菊回答：
证明：tanx1+tanx2=sinx
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【1,2,3,4,5,6,7,8,9这九个数字填写方框内,每个数字只能用一次,使等式成立.()/()=()/()=()()()/()()除法】
ABCD-A1B1C1D1是正方体,0是B1D1的中点,直线A1C交面AB1D1于点M,则错误的是()A.A,M,O,3点共线B.M,O,A1,A4点共面C.A,O,C,M,4点共面D.B,B1,O,M,4点共面
几道连词成句1.healthy,food,eating,for,health,your,is,good.2.can,give,speech.everyone,a,meeting,freely,at,the3.a,regular,it,is,us,to,breakfast,have,important,for4.cook,more,I,than,successfully,before,can5.a,work,he,he,says,has,to,do,lot,of
连词成句1.hope,are,you,enjoying,our,Beijing,school,I,in2.tired,I,am,I,and,have,lot,of,a,headaches3.must,try,eat,meat,less,to,you4.pretty,is,healthy,my,grandma,she,every,exercises,day,because5.usually,she,starls,day,with,the,breakfast
