更多"Crops grew smaller in production in"的相关试题:
[单项选择]Crops grew smaller in production in South Carolina mainly because ______.
A. demand for cotton had decreased
B. crops became varied
C. planters grew richer
D. soil was less productive
[单项选择]That genetically-modified crops could have harmful effects that can be deduced from the fact that ______.
A. cross-breeding is a natural process
B. hybrids are generally more successful at breeding than natural plants
C. gene movement between cultivated plants and wild ones is inevitable
D. new research shows that genetically-modified plants are likely to develop into weeds
[单项选择]Some crops are relatively high yielders and could be planted in preference to others to ______ the food supply.
A. enhance
B. curb
C. disrupt
D. heighten
[单项选择]Tall-growing crops should be planted where they will not shade or ______ with the growth of small crops.
A. interrupt
B. interfere
C. disturb
D. distract
[单项选择]The crops' reception of "the minimum of competition from other plants" is necessary because ______.
A. other plants competed with crops for sunlight and rain
B. people were farming in Asia, Africa and Europe
C. they could get rid of other plants
D. they wanted keep the biological balance
[单项选择]In order to repair barns, build fences, grow crops, and care for animals a farmer must indeed be
A. restless
B. skilled
C. strong
D. versatile
[单项选择]The goal is to use crops, weeds and even animal waste ______ the petroleum that fuels much of American manufacturing.
A. in terms of
B. in favor of
C. in spite of
D. in place of
[单项选择]In ancient times empires and civilizations grew up near ______.
A. nature
B. dams
C. rivers
D. buildings
[单项选择]Meteorite worship grew from the belief that meteorites were ______.
[单项选择](Different fourteen) crops were (being grown) 8,600 years (ago) by some of the world's earliest (farmers).
A. Different fourteen
B. being grown
C. ago
D. farmers
[单项选择]Cultivated crops and grazing lands ______ less than one-third of the world's land area.
A. take up
B. take in
C. take on
D. take down
[单项选择]Crops can be produced in desert only because ______.
A. there is a lot of rain
B. there is one reservoir
C. the people work together for the benefit of all
D. many wells have been found
[单项选择]The peasants shifted to the crops ______ less water.
A. needing
B. needed
C. needs
D. need to
[单项选择]______ is the most important of all American crops.
A. Wheat
B. Corn
C. Cotton
D. Rice
