阅读理解。
Welcome to Goteborg University
Goteborg University is one of Sweden's largest and most popular universities.
We are very proud of this and believe that there are several reasons for our popularity. The principal
reasons we believe to be the high quality of our education and research and the broad range of courses
that we offer. In addition to this, Goteborg University provides an attractive and exceptionally (格外的)
high-standard study environment. Most parts of the university are situated in the city centre and this
enriches city life as well as student life.
Goteborg has a lot to offer its students: it has a rich and varied cultural life with many theatres, concerts
and festivals. For those looking for outdoor life, forests and vast recreation (娱乐) areas are not far away
from the city centre; the sea and the archipelago (群岛) are also within easy reach. Industry and commerce
are expanding, and have a joint interest with the University in meeting the ever-changing and growing
demands of society.
Goteborg University strives (努力) to be an attractive choice for students from all over the world.
We look forward to welcoming you to Goteborg University.
1. The main reasons for Goteborg University's popularity according to the passage is _____.
A. the high quality education and research and the wide range of courses
B. the convenient traffic
C. its excellent location and fast developing economical environment
D. famous professors and friendly students
2. Which of the following statements is true?
A. The university is in the city centre.
B. The students can live outdoor.
C. The cultural life of the university is very rich.
D. The University has no interest in growing demands of society.
3. What's the main purpose of this passage?
A. To bring fame to Goteborg University.
B. To introduce the wonderful cultural life in Goteborg University.
C. To declare Goteborg University's goal and interest.
D. To attract students all over the world to apply for Goteborg University.
．则
．故A正确．小球离开轨道做斜抛运动，运动到最高点在水平方向上有速度，即在最高点的速度不为零，根据机械能守恒定律得，
．则
．故B错误．小球离开轨道做竖直上抛运动，运动到最高点速度为零，根据机械能守恒定律得，