人类改变水循环时间分布不均的办法是（   ）

设向量{$\overrightarrow{a}$,$\overrightarrow{b}$,$\overrightarrow{c}$}是空间一个基底，则一定可以与向量$\overrightarrow{p}$=$\overrightarrow{a}$+$\overrightarrow{b}$,$\overrightarrow{q}$=$\overrightarrow{a}$-$\overrightarrow{b}$构成空间的另一个基底的向量是（　　）

    Attention！Sunshine Language Learning Centre will set a course and it will teach Pure（纯正的） British English. Maybe you've known some British expressions are quite different from American ones。British people use “autumn” for “fall”, “film” for “movie”. “holiday” for “vocation”, “garden” for “yard”. etc

    There are more typical（典型的）expressions that you may not know. Here are Mr. Bean's examples.

    Are you interested in it? Do you want to learn? You can learn British English well if you put much effort into it. We have some native British English teachers with much experience to help you.

    The course will be open in the coming summer holiday. The price of the course is not very high: ￥500 for one person; ￥900 for two（10% off）; ￥1,200 for three (20% off); for four or more(30% off).

    For further details, call 400-810-2345 or search http://www.BEcourse.com. Come and join us!

根据课文《猴子种果树》填空。

①听到乌鸦说“____”，猴子拔了____，改种____； 

②听到喜鹊说“____”，猴子拔了____，改种____；  

③听到杜鹃说“____”，猴子拔了____，改种____。