Nights in deserts are cold because
A: winds originate at the North and South poles
B: the relative humidity is very high
C: there is a poor insulating effect from the desert and the dry air
D: nights are cloudy
E: the ocean currents prevent humidity
A: winds originate at the North and South poles
B: the relative humidity is very high
C: there is a poor insulating effect from the desert and the dry air
D: nights are cloudy
E: the ocean currents prevent humidity
举一反三
- Why did the number of complaints drop A: Because they got poor reception. B: Because the humidity was interfering with the signals. C: Because there came a blast of dry air. D: Because humidity increased rapidly in the region.
- Why do cold coastal currents create deserts A: They prevent the accumulation of rain clouds. B: They make it too cold for plants to grow. C: They cause the rain-shadow effect to occur. D: They keep moisture contained on a continent’s western edge.
- Some deserts were once ______. A: very good lands B: covered by ice C: very cold D: dry and useless
- 中国大学MOOC: In England, winter is _____snow, humid air, long nights and very chilly weather.
- Monsoons are characterized by ___ . A: light, variable winds with little or no humidity B: strong, gusty winds that blow from the same general direction all yea C: steady winds that reverse direction semiannually D: strong, cyclonic winds that change direction to conform to the passage of an extreme low pressure system