更多"The______ plants from the tropics a"的相关试题:
[单项选择]The passage mentions that the tropics differ from the Earth's polar regions in which of the following ways
A. ( The height of cloud formation in the atmosphere
B. ( The amount of heat they receive from the Sun
C. ( The strength of their largescale winds
D. ( The strength of their oceanic currents
[单项选择]Heat is transferred from the tropics to the poles（ ）.
A. in the surface currents.
B. in the atmosphere,
C. in the deep currents.
D. along the seabed.
[单项选择]
Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3, 000 feet away-straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest problems. Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3, 000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running" fevers". Farmers could then spot-spray, using 50 to 70 percent less p
A. estimate the damage to the crops
B. draw a color-coded map
C. measure the size of the affected area
D. locate the problem area
[单项选择]A) especially C) particularly B) specially D) uncommonly
A. especially
B. specially
C. particularly
D. uncommonly
[单项选择]As aquatic plants moved millions of years ago from the ocean to the land, they underwent a number of {{U}}adaptations{{/U}}.
A. mishaps
B. expansions
C. setbacks
D. modifications
[单项选择]The author states that birds left the tropics because ______. ( )
A. there was not enough food there in the winter
B. there were too many birds
C. there were too many glaciers
D. there was too much daylight
[单项选择]How did the people of Bali prevent fighting from breaking out
A. They shared the same borders.
B. The island was divided into seven kingdoms.
C. They made rules to punish those who wanted to fight.
D. Land was kept empty around each kingdom and no one lived there.
[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]Government is believed to differ strikingly from business in that government is characterized by ______.
A. Its absolute control of power
B. Its function in preserving personal freedom
C. Its role in protecting basic American values
D. Its democratic way of exercising leadership
[单项选择]People cannot survive without plants.
[单项选择]You can enjoy yourself ______ you are freed from busy work.
A. even if
B. as if
C. now that
D. so that
