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【简答题】
据研究表明，林地的降水有65%为林冠截留蒸发，35%变为地下水；而裸露的地面，约有55%的降水变为地表水流失，40%在暂时保留或蒸发，仅有5%渗人地下．林地涵养水源的能力比裸露地面高7倍．森林可以增加大气的湿度，使天空的云量增多，从而增加降水量． （1）森林能增加大气湿度，是通过______作用来完成． （2）树木依靠根尖的成熟区吸收大量降水，与其根的吸收功能相适应的结构特点是根尖成熟区具有大量的______，扩大了根的______． （3）森林还能够保持大气中氧气和二氧化碳含量的稳定，所以我们应积极参加______的活动，把我们的家园或生活环境建设得更加美好．
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【单选题】听力原文：M: Won't you stop in for a few minutes? Laura would like to see you. W: Thanks, George. I want to see her too. But Betty will be home from school at 4, and I must get some money from the bank bef...
A.
She is going to see Laura.
B.
She'll go to the bank.
C.
She is going to see Betty.
D.
She'll go home.
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A.
What a beautiful house
B.
This coffee tastes awful
C.
You're late again
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