A. light B. supply C. laundry D. satisfy

All plants need light, a suitable climate, and a(n) ______ supply of water and minerals from the soil, but some species grow best in the sun and others thrive in the shade.

A．boundless

B．supplementary

C．continual

D．ample

A、demand curve.

B、supply curve.

C、way firms make pricing decisions in the not-for-profit sector of the economy.

D、way financial markets set interest rates

T（）

A．the right amount of atmosphere

B．a steady supply of water

C．steady heat and light

D．the right distance from the sun

From the last three paragraphs we know that ______.

A．lengthening the existing 53-kilometer subway is among the 50 large projects

B．the length of the subway will be up to 135.25 kilometers in 2005

C．a 40.5-meter-long line will be added to Beijing's first light railway

D．a 70-meter-wide green belt will supply us with enough water

From the last three paragraphs we know the fact that ______.

A．the construction of Beijing's first light railway is among the 50 large projects

B．a 40.5-kilometre line will be added to Beijing's first light railway

C．the length of the subway will be up to 82.25 kilometers in 2005

D．a 70-meter-wide green belt will supply us with enough water

when

A.smoke density has been decreased sufficiently to see the bulkhead opposite the compartment's entrance

B.a lifeline and explosion proof flash light are used

C.all smoke and toxic fumes are removed and an adequate oxygen supply is present

D.overhaul has been completed to remove any possible source of re-ignition

an. These tenants of the deep have evolved some extremely ingenious devices for locating their food and enemies.

Where the light is very dim, some of these species have developed enormous eyes with almost telescopic lenses, very much like those of owls. Others, especially the fish that survive where there is no light at all, are quite blind but have developed long feelers that enable them to identify and collect stray bits of food that come within a considerable radius of them.

Some inhabitants of the deep supply their own light. They have built-in torches that they can switch on and off depending on whether they are pursuing of being pursued. Some have regular lamps, spots of steady light, which spread a faint glow through the water around them. One deepwater squid can squirt a luminous fluid that lights up its immediate vicinity, a neat variation on the ink ejected by its cousins nearer the surface to becloud and darken water. It is supposed that about half of the varieties of fish living in the dark depths of the ocean have some power of illumination.

Most of the marine species living in the darkest depths have ______.

A．learned to live without light

B．evolved ingenious devices to help them

C．found ways to supply their own light

D．developed extremely sensitive eyes

e great discoveries and have done exciting things. They have walked in space, visited the moon, and lived in space laboratories for long periods of time. Some scientists are now working on ways to make it possible for people to live on other planets. They are trying to solve problems of living in space, even though they don’t yet know what all of the problems will be. For example, they don’t’ yet know what problems people would have if they loved being weightless for several years.

If you were a space traveler you might have to spend several months, or even years, in a spaceship. While you were in the ship you wouldn’t live as you usually do. You might have to find new ways to spend your time. Your body would have to adjust to different conditions. And you would have some problems that you never think about here on earth. For example, you would have to have a huge supply of food with you because you can’t go to the supermarket when you’re halfway to another planet. You also would need fresh water and a way to get rid of waste. In fact, there would be many problems to solve in order to live in space.

1. This passage tells us that__________.

A. if you were a space traveler, you had to live in space for some time

B. scientists are trying to solve problems of living in space

C. while you were in the ship you wouldn’t live as you usually do

D. scientists are finding ways to make people live on other planets

2. The sentence “what problems people would have if they loved being weightless” (Para. 1) is probably closest in meaning to ________.

A. people who were light had many problems

B. many problems people would face in space

C. many people who loved to be very light

D. weightless people who loved to have problems

3. The phrase “a huge supple of food” (Para.2) means ________.

A. a huge piece of food

B. the food that is largely supplied on the market

C. a large amount of food

D. the food at the supermarket

4. While you were in the spaceship, you would NOT _______.

A. need fresh water and a way to get rid of waste

B. have some unusual problems

C. go to the supermarket when you were halfway to another planet

D. find new ways to spend your time

5. It can be concluded from the passage that _________.

A. life in space was interesting and exciting

B. if you were a space traveler, you had to stay in space

C. there would be many problems if you wanted to live in space

D. it was easy to enjoy oneself in space

A.supply

B. afford

C. award

D. allow

A、A. quotation

B、B. price

C、C. quotations

D、D. supply