Three girls A, B and C run in a 100 m race. When A finishes, B is 10 m behind A and when B finishes C is 20 m behind B. How far in metres was C from A when A finished? (Let’s assume all the athletes run at a constant speed) Answer: 查看更多

 

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There are nineteen boys and twenty-eight girls in our class.  1  the boys is English. His 2 is Sam. He is thirteen. Two of the  3  are American. They are twins. 4 names are Lucy and Jane. They are twelve. They are my  5 . All of the other boys and girls are  6  . We all like the English boy and the American girls,  7  they like us, too. We play games together(一起). We help  8  and they help us.
  Look, there   9  the twins! They are coming this way.  Let's 10  hello to them.
【小题1】
A.One ofB.Two ofC.Three ofD.Four of
【小题2】 
A.schoolB.sisterC.brotherD.name
【小题3】
A.brothersB.sistersC.girlsD.boys
【小题4】 
A.YourB.TheirC.Our  D.Her
【小题5】 
A.teachersB.friendsC.brothersD.students
【小题6】
A.ChineseB.EnglishC.AmericanD.friends
【小题7】 
A.butB.orC.andD.so
【小题8】 
A.herB.themC.himD.you
【小题9】
A.isB.comeC.goD.work
【小题10】 
A.speakB.tellC.sayD.talk

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5、In a triangle,if measures of three angles are x,2x and 3x respectively,then the measure of the largest angle is(  )
(英汉词典triangle:三角形,Measure:量度,the largest angle:最大角.)

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Given in the△ABC,a,b,c are three sides of the triangle,a=3,b=10 and perimeter of the triangle is multiple of 5,then the length of c is
12
12

(英汉小词典:side:边;perimeter:周长;multiple:倍数)

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The coordinates of the three points A.B.C on the plane are (-5,-5),(-2,-1)and(-1,-2)respectively,the triangle ABC is(  )
(英汉小词典:right直角的;isosceles等腰的;equilateral等边的;obtuse钝角的)

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Given in the△ABC,a,b,c are three sides of the triangle,and
3
a
=
2
b
+
1
c
,then∠A is(  )
(英汉词典acute angle:锐角;obtuse angle:钝角)
A、acute angle
B、right angle
C、obtues angle
D、acute angle or obtues angle

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