问题 绘图题

利用所学的知识思考并标准绘制以下三条曲线,绘在同一坐标图并用A,B,C注明。

A曲线:6月22日昼长随纬度的变化曲线

B曲线:各地一年中正午太阳高度最大值与最小值之差随纬度变化曲线(正午太阳高度在黑夜时为负值)

C曲线:北半球各地在6月22日时的正午太阳高度与12月22日时正午太阳高度之差随纬度变化曲线以及南半球各地在12月22日时的正午太阳高度与6月22日时正午太阳高度之差随纬度变化曲线(正午太阳高度在黑夜时为负值)

答案

评分细则:A曲线两端水平,中间弯曲。B、C:要求画成折线,注意高度角差。

完形填空

Part One: Cloze test.

Complete the blanks with the words or phrases in our textbook.

The City of the Future

What will the city of the future look like? No one knows     1    , and making predictions is a risky business. But one thing is certain --- they are going to get bigger before they get smaller. In the future, care for the environment will become very important     2     earth’s natural resources   3   . We will use lots of recycled materials, such as plastic, aluminium, steel, glass, wood and paper, and we will waste fewer natural resources. We will also have to   4   more

  5   alternative energy, such as solar and wind power. All this seems certain, but there are plenty of things about city life in the future which are not certain.

To find out what young people think about the future of urban life, a teacher at a university in Texas in the United States asked his students to think how they would run a city of 50,000 people in the year 2025. Here are some of the ideas they had:

Garbage ships  To   6   garbage problems, the city will   7   huge spaceships with waste materials and send them towards the sun, preventing landfill and environmental problems.

Batman Nets  Police will arrest criminals by firing nets instead of guns.

Forget smoking  No smoking will be allowed within a future city’s limits. Smoking will be possible only outside cities, and outdoors.

Forget the malls  In the future all shopping will be done online, and catalogues will have voice commands to place orders.

Telephones for life  Everyone will be given a telephone number at birth    8   will never change   9   where they live.

Recreation  All forms of recreation, such as cinemas, bowling, softball, concerts and others will be provided   10  by the city.

Cars  All cars will   11  by electricity, solar energy or wind, and it will be possible to change the colour of cars at the flick of a switch.

Telesurgery  Distance surgery will become common as doctors carry out operations from thousands of miles away, with each city having its own telesurgery outpatient clinic.

Holidays at home  Senior citizens and people with disabilities will be able to go anywhere in the world using high-tech cameras    12   their head.

Space travel  Travelling in space by ordinary citizens will be common. Each city will have its own spaceport.

单项选择题