
(2)已知点M(1-a,a+2)在第二象限,则a的取值范围是_______________。
(3)某书城开展学生优惠售书活动,凡一次性购书不超过200元的一律九折优惠,超过200元的,其中200元按九折算,超过200元的部分按八折算。某学生第一次去购书付款72元,第二次又去购书享受了八折优惠,他查看了所买书的定价,发现两次共节省了34元钱。则该学生第二次购书实际付款 元。
(4)原点O的坐标是 ,x轴上的点的坐标的特点是 ,y轴上的点的坐标的特点是 ;点M(a,0)在 轴上。
(5) 点P到x轴的距离是2,到y轴的距离是3,则P点的坐标是 。
(6) 线段CD是由线段AB平移得到的。点A(–1,4)的对应点为C(4,7),则点B(–4,–1)的对应点D的坐标为______________。
(7) 在平面直角坐标系内,把点P(-5,-2)先向左平移2个单位长度,再向上平移4个单位长度后得到的点的坐标是 。
若点B(a,b)在第三象限,则点C(-a+1,3b-5) 在第____________象限。
(8) 若点B(a,b)在第三象限,则点C(-a+1,3b-5) 在第____________象限。
(9)如果点M(x+3,2x-4)在第四象限内,那么x的取值范围是______________。
(10)已知点P在第二象限,且横坐标与纵坐标的和为1,试写出一个符合条件的点P 。点K在第三象限,且横坐标与纵坐标的积为8,写出两个符合条件的点 。
(11)已知,则点(,)在 。
(12)一个长方形在平面直角坐标系中三个顶点的坐标为(– 1,– 1)、(– 1,2)、(3,– 1),则第四个顶点的坐标为( )
A.(2,2) B.(3,2) C.(3,3) D.(2,3)
(13)已知三角形的三个顶点坐标分别是(-1,4),(1,1),(-4,-1),现将这三个点先向右平移2个单位长度,再向上平移3个单位长度,则平移后三个顶点的坐标是( )
A、(-2,2),(3,4),(1,7); B、(-2,2),(4,3),(1,7);
C、(2,2),(3,4),(1,7); D、(2,-2),(3,3),(1,7)
(14)在平面直角坐标系中,将三角形各点的纵坐标都减去3,横坐标保持不变,所得图形与原图形相比( )
A.向右平移了3个单位 B.向左平移了3个单位
C.向上平移了3个单位 D.向下平移了3个单位
(15)锐角三角形的三条高都在 ,钝角三角形有 条高在三角形外,直角三角形有两条高恰是它的 。
(16)若等腰三角形的两边长分别为3cm和8cm,则它的周长是 。
(17)在△ABC中,若∠A=∠C=∠B,则∠A= ,∠B= ,这个三角形是
(18)在ABC中,如果∠B-∠A-∠C=50°,∠B=____________。
(19)一个多边形的内角和是1980°,则它的边数是____,共有条对角线____,它的外角和是____。
(20)如图,已知直线AB∥CD,当点E直线AB与CD之间时,有∠BED=
∠ABE+∠CDE成立;而当点E在直线AB与CD之外时,下列关系式成立的是( )
A ∠BED=∠ABE+∠CDE或∠BED=∠ABE-∠CDE
B ∠BED=∠ABE-∠CDE
C ∠BED=∠CDE-∠ABE或∠BED=∠ABE-∠CDE
D ∠BED=∠CDE-∠ABE
(21)已知一多边形的每一个内角都等于150°,则这个多边形是正( )
(A) 十二边形 (B) 十边形 (C) 八边形 (D) 六边形
(22)中华人民共和国国旗上的五角星,它的五个锐角的度数和是( )
A、500 B、100 0 C、180 0 D、 200 0
(23)在ABC中,三个内角满足∠B-∠A=∠C-∠B,则∠B等于( )
A、70° B、60° C、90° D、120°
(24)在锐角三角形中,最大内角的取值范围是( )
A、0°<<90° B、60°<<180° C、60°<<90° D、60°≤<90
(25)在五边形ABCDE中,∠A=∠D,∠C+∠E=2∠B,∠A-∠B=45°,求∠A、
∠B的度数
(26)在△ABC中,已知∠ABC=66°,∠ACB=54°,BE是AC上的高,CF是AB上的高,H是BE和CF的交点,求∠ABE、∠ACF和∠BHC的度数.
(27)下列长度的三条线段可以组成三角形的是( )
(A)3、4、2 (B)12、5、6 (C)1、5、9 (D)5、2、7
(27)在平面直角坐标系中,点A(-3,0),B(5,0),C(0,4)所组成的三角形ABC的面积是( )
A、32; B、4; C、16; D、8
(28)在△ABC中,∠A=(∠B+∠C)、∠B-∠C=20°,求∠A、∠B、∠C的度数。
(29)如图,在△ABC中,∠ABC与∠ACB的平分线交于点I,根据下列条件求∠BIC的度数.(1)若∠ABC=50°,∠ACB=80°,则∠BIC=______________________;
(2)若∠ABC+∠ACB=116°,则∠BIC=_______________________;
(3)若∠A=56°,则∠BIC=________________________;
(4)若∠BIC=100°,则∠A=_________________;
(5)通过以上计算,探索出您所发现规律:∠A与∠BIC之间的
数量关系是_________________________________。
(30)已知,如图9,点B、F、C、E在同一直线上,AC、DF相交于点G,AB⊥BE,垂足为B,DE⊥BE,垂足为E,且AB=DE,BF=CE.那么:∠A与∠ D有怎样的关系?你能说出理由吗?
(31)已知:如图11,是和的平分线,.
那么吗?请说明理由.
(32)一个三角形的两边长分别为3和7,且第三边长为整数,这样的三角形的周长最小值是( )
A.14 B.15 C.16 D.17
(33)图3是一个等边三角形木框,甲虫在边框上爬行(,端点除外),设甲虫到另外两边的距离之和为,等边三角形的高为,则与的大小关系是( )
A. B.
C. D.无法确定
(34)如图7,已知△ABC中,BD是∠ABC的角平分线,DE∥BC,交AB于E,∠A=60°,∠C=80°,求:△BDE各内角的度数.
(35)下列各点中,在第二象限的点是 ( )
A.(2,3) B.(2,-3) C.(-2,3) D.(-2, -3)
(36)若点P(x ,y)的坐标满足xy=0(x≠y),则点P在 ( )
A.原点上 B.x轴上 C.y轴上 D.x轴上或y轴上
(37)将某图形的横坐标都减去2,纵坐标保持不变,则该图形 ( )
A.向右平移2个单位 B.向左平移2 个单位
C.向上平移2 个单位 D.向下平移2 个单位
(38)一只蚂蚁由(0,0)先向上爬4个单位长度,再向右爬3个单位长度,再向下爬2个单位长度后,它所在位置的坐标是_________
(Liu Hua is Li Wei’s pen pal, and now he is in a high school in Sydney. This is a letter from Liu Hua 1 Li Wei.)
Dear Li Wei,
Thank you for your postcard. I am 2 to you in the reading room. Now I have many new friends here. Jim is one of them. He is 13 years old, his mother is an American, 3 his father is from Canada. He often 4 me to go to his home for dinner. His family like China very much. At the school, we have many good teachers. One of them is from the USA. We 5 her Miss Green. She teaches 6 English. Our French teacher is Mr Brown. He comes 7 Paris. He loves us very much, and we all love him. Our Chinese teacher is Mr Scott, Jim’s father. After school, he often talks to me 8 Chinese. 9 is your English now? I want to know something 10 you very much. Please write to me soon.
Yours,
Liu Hua
1. A. with B. to C. from D. for
2. A. asking B. telling C. telephoning D. writing
3. A. but B. so C. because D. then
4. A. gives B. gets C. asks D. lets
5. A. say B. ask C. call D. teach
6. A. us B. we C. our D. ours
7. A. in B. from C. at D. to
8. A. with B. in C. for D. about
9. A. What B. When C. Why D. How
10. A. about B. for C. with D. of
(A)
My name is Jack Wilson. I am from Toronto, Canada. It’s far from Shijiazhuang. I am 13 years old. I am a schoolboy. I know China is a great country. I want to learn Chinese. I want to go on a trip to China. There are twenty-four students in my class. My classmates are from six countries. They are learning English. My parents are from France. They speak French. I speak English and French. There are five Chinese students here in my class. We are good friends.
1. Jack is from______.
A. Toronto B. Shijiazhuang C. China D. France
2. Jack wants to______.
A. go to France B. learn French C. go to China D. learn English
3. Jack’s class has______ students.
A. six B. five C. fourteen D. twenty-four
4. Jack can speak______.
A. English and French B. Chinese and English C. English and Japanese D. French and Chinese
5.______ students are Chinese in Jack’s class.
A. Six B. Five C. Four D. Nineteen
(B)
Mr. Hu teaches us P.E. this term. He is a nice teacher from England. He is very tall. He likes wearing a white shirt and black trousers. He speaks English very well. We like his classes because his classes are very interesting.
His home is not so far from the school. Sometimes we go to his home and play with his twin sons. His sons are only two years old. They look the same and often wear the same clothes. Mr. Hu calls them Da Ming and Xiao Ming.
根据短文内容回答下列问题。
1. What does Mr Hu teach?
2. Where is he from?
3. Where does he live?
4. How old are his sons?
5. What are his sons’ names?
从下面方框中的A-G选项中选择适当的答语,补全对话。其中有两项是多余选项。
A. Yes, but only a little.
B. The people and the food.
C. No, I come from Australia.
D. I like it very much.
E. What about you?
F. Yes, I like it.
G. We’re from Canada.
1. —Where are you from? —______
2. —Do you speak English? —______
3. —How do you like China? —______
4. —What do you like about China? —______
5. —Do you come from England? —______
1. The post office is ___ Fifth Avenue.
A. of B. on C. across D. from
2. ___, is there a pay phone in the neighborhood?
A. I’m sorry B. Sorry C. Excuse me D. Excuse
3. They’re ___ Australia. We’re Chinese.
A. come from B. coming from C. from D. for
4. ---Can I help you? ---___.
A. Yes, you B. No, you can’t
C. I’d like a pizza D. I like a pizza
5. ___ you ___ soccer over the weekend?
A. Did, played B. Do, played C. Did, play D. Did, plaied
6. If you want _ jazz. Please go to the Fantastic House.
A. listen to B. hear C. to listen to D. to listen
7. The woman__glasses is our English teacher.
A. in B. with C. on D. of
8. The pretty woman has __ hair.
A. long brown B. brown long
C. a long brown D. a brown long
9. --__ is he like? --He is serious.
A. How B. What C. Where D. Who
10. Let me tell you the way ___ the hospital.
A. to B. at C. on D. for
11. ---___ do your cousins like koala bears?
---Because they are very cute.
A. Why B. What C. Who D. How
12. ---___ the girl like elephants? ---Yes, ______.
A. Does, she does B. Does, she do
C. Do, she do D. Do, she does
13. This koala bear is very lazy. He __ during the day,
but he ___ up and eats leaves at night.
A. sleeps, eat B. sleep, eat C. sleeps, gets D. sleep, eats
14. My father ____ a large pizza.
A. would likes B. would like C. would to like D. is like
15. Mary and Meimei would like mushrooms, _______
and _____ on their pizza.
A. tomatos, cheese B. tomatoes, cheeses
C. tomatoes, cheese D. tomato, cheese
