有四组条件:(1)底边和顶角分别对应相等的两个等腰三角形；(2)有一边对应相等的

发布时间：2017-05-02 16:34 │ 来源：www.tikuol.com

题型：选择题

问题：

有四组条件:(1)底边和顶角分别对应相等的两个等腰三角形；(2)有一边对应相等的两个等边三角形；(3)两边和一角对应相等的两个三角形；(4)两直角边对应相等的两个直角三角形。其中能判定两个三角形全等的条件是（）

A．(1)(2)(3)

B．(1)(2)(4)

C．(2)(3)(4)

D．(1)(3)(4)

考点：相似多边形的性质相似三角形的判定相似三角形的性质相似三角形的应用

题型：选择题

完形填空。

     Tim was ten years old. He was not a very good pupil, and he did not like  1 to do homework
because he enjoyed  2 other things in his free time. Frequently he did not do his
homework and when he did do it he always  3 a lot of mistakes.
     One day his mathematics teacher  4 Tim's homework and saw that he  5 all his
sums right. He was very pleased and rather 6 . He called Time to his desk and said to him.
"You got all your homework right this time, Tim. What  7 ? Did you father help 8 ?"
     Usually Tim's father did help him  9 his homework, but the evening before this, he had not
been able to, because he had not been at home, so Tim answered, "No, sir, he was very busy last night,
so I had to do it all  10 ."

( )1. A. had
( )2. A. doing
( )3. A. makes
( )4. A. looked for
( )5. A. had got
( )6. A. angry
( )7. A. is the matter
( )8. A. yourself
( )9. A. with
( )10. A. my own

B. having
B. to do
B. making
B. looked at
B. has got
B. sad
B. was wrong
B. himself
B. in
B. lonely

C. doing
C. did
C. made
C. looked around
C. got
C. surprised
C. made you
C. him
C. on
C. alone

D. has
D. do
D. has made
D. looked up
D. didn't get
D. excited
D. happened
D. you
D. to
D. myself

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