题目内容
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A．To spread our knees and legs.
B．To put one knee on each side of the box.
C．To keep our back straight.
D．To put our hands under the object in front of us.
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There are two ways by which this pollution problem can be dwindled. The first relates to the treatment of wastes to decrease their pollution hazard. This involves the processing of solid wastes "prior to" disposal and the treatment of liquid wastes, or effluents, tn permit the reuse of the water or minimize pollution upon final disposal.
A second approach is to develop an economic use for all or a part of the wastes. Farm manure is spread in fields as a nutrient or organic supplement. Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained. Effluents from other processing plants may also be used as a supplemental source of water. Many industries, such as meat and poultry processing plants, are currently converting former waste products into marketable by products. Other industries are exploring potential economic uses for their waste products.
The purpose of this passage is ______.
A．to acquaint the reader with water pollution problems
B．to alert the reader to the dwindling water supply
C．to explain industrial uses of water
D．to demonstrate various measures to solve the pollution problem
A．To develop a greater resistance.
B．To increase the spread of infections.
C．To create a good environment.
D．To increase being infected.
Why is simple food spread all over the supermarket？
A．To make people buy more food.
B．To help you make decision.
C．Because it is cheap.
D．Because it is easy to find them.
"Unfold" means ______.
A．to appear and spread
B．to fly over
C．to set to work
D．to get busy
What could be an effective way to control the red ants？
A．To spread a kind of virus within the ants themselves.
B．To use fire to destroy them.
C．To create a kind of powerful poison to destroy them.
D．To raise other biological animals to kill them.
A．To find more infections than under normal circumstances.
B．To examine if it is influenza or swine flu.
C．To see if the illness is serious.
D．To stop the illness spread to other areas.
A．To reduce the risk
B．To spread the risk
C．To earn a high rate of return
D．To strengthen the market position
What is the purpose of Bill Smith's AIDS foundation？
A．To prevent people from contracting and spreading AIDS.
B．To carry out research on how to prevent the spread of AIDS.
C．To keep up with the rate of the epidemic growing.
D．To promote AIDS awareness and prevention.
What's the purpose of the manufacturers' adding a switch to most new television sets？
A．To make more money.
B．To spread the cable system.
C．To make ordinary viewing possible.
D．To adapt to the new development of the cable system.
According to Paragraph 4, what is the function of the Jacobson's organ in snakes？
A．To assist in the search for chemical particles in the air.
B．To enable the tongue's fork to be spread more widely.
C．To utilize the snake's trained sense of direction.
D．To compare the sensory input of the two tongue tips.
