更多"Certain pine trees are deliberately"的相关试题:
[单项选择]______ , leaves from certain trees such as the maple turn into bright colours.
A. During the fall
B. With the fall
C. While the fall
D. Along the fall
[单项选择]Pine trees, of which them am almost one hundred ______, are found throughout the North Temperate Zone.
A. species
B. differences
C. similarities
D. standards
[单项选择]PINE:
A. (A) forge ahead
B. (B) become energized
C. (C) refuse to yield
D. (D) become furious
E. (E) fall apart
[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]Primitive humans probably did not (deliberately cook) food until (long) after they had learned (to use )fire for light and (warm.)
A. deliberately cook
B. long
C. to use
D. warm
[单项选择]
The newspaper stories deliberately put down the actress's unattractive past.（）
A. acted down
B. played down
C. wrote down
D. put down
[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]His deliberately ______ remarks of the Blacks' contribution to the music in his lecture resulted in the prompt protest among the audience.
A. dubious
B. concise
C. provocative
D. dual
[单项选择]The ponderous pine, a towering resident of dry regions of the United States,______ survives and thrives where other trees fail.
A. tenderly
B. tenuously
C. tentatively
D. tenaciously
[单项选择]Most tangerine trees and their flowers and fruits resemble ______ the orange, although tangerines are generally smaller.
A. ( of those
B. ( which of those
C. ( those of
D. ( which are of
[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.
[单项选择]What happened to the leaves falling from the trees in the second study
A. They broke down and the main parts turned into oxygen.
B. They broke down and the carbon content had mainly turned into carbon dioxide.
C. They broke down and the carbon content was mainly absorbed in the soil.
D. They absorbed more carbon dioxide.
