Some cities grow very large because of two important reasons. First, there may be important natural resources like wood, gas, oil, rivers or harbors near or in the city. Natural resources like wood or oil can be brought to the city and made into products to sell. Other resources, like rivers or harbors help to send the city’s products to other places to be sold. Second, the city may be located in a place where roads and rivers come together. This makes these cities good places to buy and sell goods.
Houston is a city that grew large because it has two important natural resources. They are oil and a good harbor. The oil can be brought to Houston, made into different products, and shipped out of the harbor to other parts of the world.
Chicago is a city that grew very large because of its location at a place where roads, railways, and airways meet. In Chicago, goods can be brought together from all over the country and bought and sold. Then the goods can be loa
A. natural resources
B. convenient traffic
C. population growth
D. A and B
| Some cities grow very large because of
two important reasons. First, there may be important natural resources like
wood, gas, oil, rivers or harbors near or in the city. Natural resources like
wood or oil can be brought to the city and made into products to sell. Other
resources, like rivers or harbors help to send the city’s products to other
places to be sold. Second, the city may be located in a place where roads and
rivers come together. This makes these cities good places to buy and sell
goods. Houston is a city that grew large because it has two important natural resources. They are oil and a good harbor. The oil can be brought to Houston, made into different products, and shipped out of the harbor to other parts of the world. Chicago is a city that grew very large because of its location at a place where roads A. natural resources B. convenient traffic C. population growth D. A and B [简答题]Some universities are very large and have several thousand students．Others are small and have only a few thousand students．Which size of university do you think is better for students, and why Include details and examples in your explanation．
[填空题]There has been a large (grow) ______ of light industries during these years.
[单项选择]There are robots all around us. Some do very complicated jobs like flying airplanes and driving subway trains. And some do one simple job.
When an automatic washing machine is switched on, water pours in. The machine waits until the water is hot before washing the clothes. It does this by "feedback". Information about what is happening is "fed back" into the robot to tell it what to do next. Our eyes, ears and other senses are our feedback. They tell us what is going on around us. So robots are like people in two ways. They work and they have feedback. But very few robots look like people. Many are hidden away. Robots control the temperature of our houses. We can set the controls to the temperature we want. The robot does the rest. Its feedback usually comes from a thermostat. One kind of thermostat is a strip of metal which bends when it gets hot. At the right temperature, it bends just enough to work a switch. This turns off the heat. As the air around it A. something loaded onto the machine B. the hot water C. information received D. signals sent to the machine [填空题]Few large cities depend on their attractive natural scenery to make them outstanding.
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