更多"Apple trees need moisture in order "的相关试题:
[单项选择]If you plant two apple trees in one square yard of land, and the trees' productivity ______ decline.
A. is bound to
B. is determined to
C. is unlikely to
D. is related to
[单项选择]The first trees were like modern trees in most ways except that ______.
A. they do not have branches
B. they do not have flowers
C. they do not have seeds
D. they do not need sunlight
[单项选择]What happens to trees each year
A. Their tings get thinner and thinner.
B. They add a ring of wood.
C. Their rings get darker in color.
D. They become more valuable.
[单项选择]Why did people cut down trees
A. For advantage.
B. For benefit.
C. For house.
D. For business.
[单项选择]The cylindrical shape of a cactus reduces moisture loss（ ）.
A. lessens
B. delays
C. redistributes
D. reverses
[单项选择]Where can the tallest trees be found
A. In Muir Woods.
B. Near Los Angeles.
C. In San Francisco.
D. Along the Northern California coast.
[单项选择]Earthworms occur（） adequate moisture and food and the necessary soil conditions are found.
A. and
B. whenever
C. however
D. wherever
[单项选择]Why researchers put trees in extra carbon dioxide in the first study
A. To learn whether trees can still absorb carbon dioxide under extreme conditions.
B. To get more oxygen from these trees.
C. To evaluate the maximum carbon dioxide that trees can absorb.
D. To see the growth rate of these trees.
[单项选择]What is the most important function of trees
A. Providing fuel.
B. Offering shade.
C. Preventing natural disasters.
D. Providing charcoal.
