更多"Hydroponics（）the cultivation of pla"的相关试题:
[单项选择]Hydroponics （）the cultivation of plants without soil.
A. does
B. is
C. do
D. are
[单项选择]Hydroponics ______ the cultivation of plants without soil.
A. does
B. is
C. do
D. are
[单项选择]Gardening is the cultivation of plants, usually in or near the home, as a hobby.
A. germination
B. growing
C. classification
D. sowing
[单项选择]People cannot survive without plants.
[单项选择]Without heat and sunlight, plants on the earth ______ well.
A. would not grow
B. will not grow
C. had not grown
D. would not be grown
[单项选择]Man cannot live without food _____ than plants can grow without sunshine.
A. any more
B. more or less
C. not more
D. no more
[单项选择]How is food for plants made Food for plants is made ______.
A. from water
B. from the air in the sky
C. from the soil
D. from water, things in the soil and air and sunlight
[单项选择]English primrose need to be grown in rich damp soil with plenty of ______or compost worked into it.
A. marijuana
B. manure
C. malt
D. mallet
[单项选择]Canada began (cultivation) wheat intensively in 1910, which (led to) a demand for tools, machines, (housing), and (building supplies).
A. cultivation
B. led to
C. housing
D. building supplies
[单项选择]Researchers discovered that plants infected with a virus give off a gas that ______ disease resistance in neighboring plants.
A. contracts
B. activates
C. maintains
D. prescribe
[单项选择]Quoiqu`il soit ____, il vient assister à notre soirée.
A. bien portant
B. un peu malade
C. .mourant
D. hospitalisé
[单项选择]While photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
[单项选择]Which of the following night flowering plants open slowly every night just at sunset
[单项选择]Cactus plants have spines that prevent animals from {{U}}nibbling{{/U}} them.
A. ruining
B. reaching
C. climbing
D. gnawing
[单项选择]What has sometimes caused plants to die out
A. Interference from foresters.
B. Variations in climate.
C. The absence of wooded land.
D. The introduction of new type of plants.
[单项选择]Why are weedy plants a source of traditional medicines according to Coley
A. They are within human reach.
B. They grow on cultivated ground.
C. They crowd out cultivated plants.
D. They grow profusely where it is not wanted.
