Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the inhabitants of a country. If tourists create too much
-- The enemy didn’t stop, instead they ________ towards the village at a faster speed.-- So the villagers were in danger. A. overcame B. struggled C. behaved
Imagining being asked to spend twelve or so years of your life in a society which consisted only of members of own sex. How would you react? Unless there was something definitely wrong with you, yo
．
的最小正周期及最值；
，判断函数
的奇偶性，并说明理由．
．
时，
取得最小值
；当
时，
取得最大值2．
．又
．
．
．
函数
是偶函数．