______(a－b）_______(c＋d）=c+d－a+b

______(a－b）_______(c＋d）=c+d－a+b 添括号(a-b+c-d)(a+b-c-d)=[(a-d)-_______][(a-d）+______] 第二题 A,_______,_________ B,_________,____第二题A,_______,_________ B,_________,______ C,________,_________ .D,_______,_______ -3xy-x+1=1-（______) a-(b+c-d)=a-b-(_______) 科学家调查（五年级题）1.调查（按要求写出科学家的名字,能写几个算几个）.A.中国科学家：______、______、______、______、______、______、______、______、______、______.B.外国科学家：_______、______、 -{-[-(-a-b+c)]}化简得______,其相反数为_______ 英语题：（见附录）在下列中选出与下列哥音标相对的清辅音或浊辅音.A./p/ B./k/ C./d/ D./v//t/_______/g/ ______/b/______/f/_______ There's _______ 800-metre-long road behind ______ hospital.(选择并解说）A、an ; an B、a ; a C、an ; the D、a ; the There's _______ 800-metre-long road behind ______ hospital.(选择并解说）A、an ; an B、a ; a C、an ; theD、a ; the 选出下列单词所缺的字母,并译成中文（ ）1.m_ _t A.ae B.aa C.ee _______( ) 2.t_st_ A.e; a B.a; e C.a; a ______( ) 3._ _rly A.ae B.ee C.ea _______( ）4.h_l _day A.o;i B.i; o C.o; o ______( ) 5.b_for_ A.a; a B.e; e C.i; i _____ 1、A:May I use your crayonB:Yes.______ ______ ______(填空)2、A:Glad to see you,Sue.B:______ ______ ______ ______ ,_______.(填空)A:______ ______ ______ ______ ______ _______ ,sirA:______ ______ ______ ______ ______ _______ ,sir B:I want to buy a is there a school ______ ______ _______ (在附近） 将方程3x²-5=6x化为一般形式ax²+bx+c=0后,a=______,b=_______,c=_______ 英语选择题（写理由）---We should do something _______ our environment ______.A.keeping,cleaned B.to keep,being cleaned C.to keep clean D.keeping,cleaned 填空题 4..5（x-y+z）（-x+y+z）[z+(____)][_ __ __ _]=z^2-(____)^2,5,（-a+b+c）（a+b-c）=[b-(_____)] [b+(______)]=[_______] （ ）1.I dom't like ______.I like ______ very much.A.vegetable,fruit B.vegetables,fruit C.vegetables,fruits( )2._______ water ______ you drink evey day?A.for,quickly B.to ,quickly C.for,quick( )3.________ late for school ,Kate.A.Not to B.Don't be C 在数轴上有6个点,且AB=BC=CD=DE=EF,则与点D所表示的数最接近的整数是A B C D E F _____|______|______|_____|_____|______|_______-11 5A B C D E F _____|______|______|_____|_____|______|_______-11 5 ( ) 45.Please _______ me ______ 6219888.A.Let,in B.Put,on C.call,on D.call,at