1.单选题- (共9题)
）（b-a）=b2-a2
）（
）
可变形为（ ）
有意义的条件是( )
BC．②EF
FD．③BEBD．④ACAE.其中正确的个数是（）
A. 1 B. 2 C. 3 D. 4
的长度最短，作法为：①作点B关于直线l的对称点B＇．②连接AB＇交直线l于点C，则点C即为所求．在解决这个问题时，没有用到的知识点是( )
| A．线段的垂直平分线性质 B.两点之间线段最短 | |
| B．三角形两边之和大于第三边 | C．角平分线的性质 |
2.选择题- (共1题)
根据短文理解选择正确答案。
Everyone needs friends. Friends bring us happiness and hope in our lives. But the ability to make friends changes from person to person. To some people, making friends is easy, and to others it's very difficult.
Making friends is a skill, and the first thing is to know how to get on with others.
If you have trouble in making friends, maybe I can tell you how to do it.
★Realize your own good points. You have skills and talents(才能) that others will like.
★ Believe that you are a good person and have something nice to share with others.
★ Be humourous. Learn to laugh at yourself and your weakness. Remember to smile at others.
★ Respect(尊敬) others. Everyone has his own idea. Learn how to listen to others’ ideas without trying to make them accept(接受) yours.
★ Be kind. If you are kind to others, they will usually be kind to you. There are hundreds of little things you can do to show your kindness. Open the door for someone. Wave to a friend and so on.
★ Don't complain(抱怨). Learn to accept what you can't change, and work hard to change what you can. No one is willing to hear your complaints all the time.
★ Never give up. Even if you are faced with some closed-minded people, never give up. And try to find someone who will understand you.
3.填空题- (共5题)
_________________．（a﹣b）（a+b）=a2﹣b2
（a﹣b）（a2+ab+b2）=a3﹣b3
（a﹣b）（a3+a2b+ab2+b3）=a4﹣b4
…
可得到（a﹣b）（a2016+a2015b+…+ab2015+b2016）=____．
的值为0，则
____________．
AC，PRAB，若AQ
PQ，PRPS，则下列结论：①ASAR；②QP∥AR；③△BRP ≌△CPS；④S四边形ARPQ=
．其中正确的结论有____________（填序号）.
AC，AB的垂直平分线DE交AC于D，交AB于E，且BD平分∠ABC，则∠BDC＝___________度.
4.解答题- (共7题)
的值．（1）试销时该品种苹果的进货价是每千克多少元?
（2）如果超市将该品种苹果按每千克7元的定价出售，当大部分苹果售出后，余下的400千克按定价的七折（“七折”即定价的70%）售完，那么超市在这两次苹果销售中共盈利多少元？
（1）求证：△ABC≌△ADE；
（2）求证：CA平分∠BCD；
（3）如图（2），设AF是△ABC的BC边上的高，求证：EC＝2AF．
(1)已知∠B=30°，∠C=60°，求∠DAE的度数；
(2)设∠B=x，∠C=y（x＜y）．请直接写出∠DAE的度数 ．（用含x，y的代数式表示）
cm，BQ
-
【1】题量占比
单选题:(9道)
选择题:(1道)
填空题:(5道)
解答题:(7道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：18
7星难题：0
8星难题：3
9星难题：0