By the year 2000, the number of births and the number of deaths in China will____.
A. be greatly different
B. be equal to each other
C. drop a great deal
D. become much larger
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The first paragraph is mainly concerned with_____.
A. snow glare and snowhlindness
B. the whiteness from snow
C. headaches, watering eyes and snowblindness
D. the need for dark glasses
It is believed by most scientists that______.
A. the moon was hit by an object as large as Mars
B. the moon formed from pieces of rock from Mars
C. the pieces from Mars came together to form. the earth
D. the moon is made up of materials similar to those of the earth
The purpose of the passage is to ______
A. enlarge our knowledge of the plants
B. provide latest information on plant usage
C. introduce a successful project concerning a plant
D. emphasize the importance of rare plant preservation
But for his kind help, I______this experiment so quickly.
A. shouldn't be finishing
B. couldn't finished
C. hadn't finished
D. wouldn't have finished
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