[题目]在飞机飞行时,飞行方向是用飞行路线与实际的南或北方向线之间的夹角大小来表示的,如图,用AN(南北线)与飞行线之间顺时针方向夹角作为飞行方向角,从A到B的飞行方向角为35°,从A到C的飞行方向角为60°,从A到D的飞行方向角为145°,试求AB与AC之间夹角为多少度?AD与AC之间夹角为多少度?并画出从A飞出且方向角为105°的飞行线. 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】在飞机飞行时,飞行方向是用飞行路线与实际的南或北方向线之间的夹角大小来表示的,如图,用AN(南北线)与飞行线之间顺时针方向夹角作为飞行方向角,从A到B的飞行方向角为35°,从A到C的飞行方向角为60°,从A到D的飞行方向角为145°,试求AB与AC之间夹角为多少度?AD与AC之间夹角为多少度?并画出从A飞出且方向角为105°的飞行线.

【答案】答案见解析.

【解析】本题考查的是方位角

阅读题目条件，明确飞机飞行角的概念，找到南北线与飞行线之间顺时针方向夹角，计算其角度解答．

由题意可知∠NAB=35°，∠NAC=60°，∠NAD=145°．

故AB与AC之间夹角为∠NAC-∠NAB=60°-35°=25°，

AD与AC之间夹角为∠NAD-∠NAC=145°-60°=85°．

思路拓展：此题是一道材料分析题，解答时要认真阅读，明确题目条件，特别是题目中的新概念，依据新概念解答．

练习册系列答案

During school terms I could 【2】(free)enjoy modern life—especially the Internet, TV and a phone network. During the winter breaks, however, I was 【3】(throw)back to nearly medieval times(中世纪)—no Internet, no TV or no phone.

To many of 【4】(I)friends, it sounded terrible. 【5】every time the holiday drew nearer, I couldn't wait to go to the French countryside with my parents. Where else could I enjoy the cold and fresh wind in my hair while rushing down a hill on my bike, build tree houses w【6】 my friends in a forest, catch fishes in a river for lunch and play with baby rabbits—all in the same day.

I consider myself lucky to have had such 【7】different experience.

Learning to enjoy myself without 【8】(depend)on computers and other electronic things developed my imagination. I learned many practical 【9】(skill), such as planting trees and building boats. I learned another language and made lifelong friends along the way, too. Even till today, I regard the experiences as a p【10】 of the most valuable things in my life.

【题目】 Richard Campbell is a secondary school student. He is 15 years old. He lives in a small town in the North of England. Every morning, he gets up at eight o'clock, puts on his uniform and walks to school.

One hour later, the lessons start. The students usually study math, English, history and geography in the morning. They usually study music and drawing and they play sports after lunch.

They have a tenminute break between classes. They also spend a long time in the school library, reading books and doing their homework.

Richard likes his school very much. His favorite subjects are English and geography, but he doesn't like math because he is not good at it.

Richard and all his friends spend the whole day at school. Lunch is at one o'clock. He doesn't like the food that the school serves. This is why he often brings a packed lunch from home. He always has his lunch in the dining hall, but some of his friends sometimes eat in the courtyard or outside the school gate.

At weekends, he always goes out with his friends because he doesn't go to school. On Saturday, he always goes to the cinema or to the sports center. On Sunday, he just goes for a walk with his dog.

【1】Richard's lessons begin________ in the morning.

A.at 8：00B.at 8：30C.at 9：00D.at 9：10

【2】Richard likes________ best according to the passage.

A.math and English

B.English and geography

C.history and math

D.geography and history

【3】Richard has lunch________ on weekdays.

A.in the dining hallB.at home

C.in the courtyardD.outside his school gate

【4】What does Richard always do on Saturday?

A.He reads and does homework.

B.He goes to see films or does sports.

C.He walks his dog or does exercise.

D.He spends a long time in the library.

【题目】最近你们社区环境大不如以前，社区工作人员就“如何保持社区整洁”向你们征求意见。假如你是李华，请你根据所给提示和要求写一篇英语短文，给出你的建议。

提示：(1)Treat the neighborhood as our home.(2)Stop littering around.(3)Plant more trees.

要求：(1)短文须包括所有提示内容，可适当发挥。(2)短文中不得出现真实的人名、校名和地名。(3)词数80个左右(开头已给出，不计入总词数)。

Our neighborhood used to be green and tidy. But now, ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

【题目】 It was sunny when my dad and I were arriving at his company. We stopped the car and got 【1】. I saw a gray thing on the floor. I thought it was 【2】 garbage bag. But it started to move. Then I【3】(realize) that it was a small wounded dog.

The small dog was so poor that my father and I decided to help 【4】(he). We bought the dog some food in the store across from the street. We also got some clean w 【5】 for the dog. He was so 【6】 (hunger)that all the food was eaten up quickly. After he finished his eating, we encouraged him to move. 7.H 【7】, he could not. We tried a 【8】 (two) time, but failed again. At the end, we decided to carry him to the veterinary station(兽医站). The vet told us that he had a broken leg, so he couldn't move 【9】 (easy). The vet gave him a cure and we looked after him carefully. After five 【10】 (day), he recovered. We found a kind family for him. I understood that everybody can make an act of kindness.

【题目】

The Trans-Siberian Railway is the【1】 railway in the world .You can go from Moscow ,the 【2】of Russia , to Vladivostok on the 【3】 coast .It’s not the 【4】 way to travel from Moscow to Vladivostok ,but it is the most 【5】 and also the most comfortable way.

【题目】根据短文肉容．判断下列句子的正误。正确的用“T”．错误的用“F”。(每小题1分．共5分)

A long time ago. there was an emperor. He had a beautiful garden. In the garden, there was a little nightingale(夜莺) singing very beautifully.

One day the emperor heard about this little bird's beautiful voice. He asked his guards to bring her to him. As soon as the emperor heard the nightingale's voice, he said, "Put her in a golden cage, so she can stay and sing for me whenever I want to hear her. "

The little bird was so unhappy about being kept in the cage that she stopped singing one day. The emperor was very angry. He ordered the scientists in his palace to make a robot bird for him. The bird could sing very beautifully, too. The emperor was pleased.

Soon the robot bird became old. It no longer sang beautiful songs. Just at that time, the emperor became very weak. One morning, while lying in bed, the emperor wanted it to sing once again. But the robot bird couldn't sing any more. Suddenly the nightingale landed on the window. She began to sing her most beautiful song. The emperor was very happy! He became better and better each day.

After the emperor was well，he changed a lot and became kind to his people. From then on, all his people cherished(爱戴) him for his love and kindness.

【1】Both the nightingale and the robot bird had a beautiful voice.

【2】The emperor kept the nightingale in a golden cage in order to hear her sing at any time.

【3】The nightingale was very happy after she was kept in the golden cage.

【4】The emperor was not satisfied with the robot bird at first.

【5】The emperor learnt from the nightingale what love and kindness was.

【题目】C

Travel Information

根据材料内容选择最佳答案。

【1】 It is said that the love story about Xu Xian and the White Snake happened on _______________.

A. Dragon Tower B. West Lake C. Water Cube D. Disneyland

【2】 If a person in Hangzhou feels like visiting Water Cube, he should call _______________ to get information.

A. 0451-82187899 B. 0571-68345576 C. 0852-28029822 D. 0l0-28135589

【3】Disneyland, which attracts a lot of tourists from home and abroad every year, is in _______________ according to the travel information.

A. Beijing B. Harbin C. Hong Kong D. Hangzhou

【4】 Two travelers plan to have a bird’s-eye view (俯视) of Harbin, and they need to pay _______________ from the information above.

A. 160 B. 300 C. 450 D. 150

【5】 Which of the following is TRUE according to the travel information?

A. Water Cube is special in design.

B. The price of a ticket for West Lake is the highest.

C. In Disneyland, you can’t see any cartoon characters.

D. Dragon tower is an interesting place in Beijing.

【题目】读下图，回答问题。(每空1分，共10分)

⑴A是 (山脉)，它的北侧是盆地。

⑵C是 (山脉)，它的东侧是平原。

⑶D山脉的西侧是高原。E是山脉。

⑷F山脉的走向是，G山峰南侧的国家是。

(5)H山脉是江西省和省之间的山脉。

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