Pet owners are being encouraged to take their animals to work, a move scientists say can be good for productivity, workplace morale (士气)，and the well-being of animals. A study
已知函数f(x)＝x2－alnx(a∈R)．[（Ⅰ）求f(x)的单调区间； （Ⅱ）当x>1时，x2＋lnx<x3是否恒成立，并说明理由．
(2019·石家庄九中一模改编)给加着重号的字注音,根据注音写出相应的字词。 (1)我们这里是四季分明的温带气候()。 (2)释放多元潜能,成就卓越( )人生。 (3
III. 完形填空（共20小题；每小1分，满分20分） 阅读下面短文，掌握其大意，然后从33—52各题所给的四个选项 (A，B，C和D)，选出可以填入空白处的最佳
读“地球表面的光照图”，完成下列问题。 （1）这一天是____月____日，我国的节气是________。 （2）太阳直射的纬线在________，北半球是____季。 （3）B
The roads into London were so _____ traffic that even the fire engines couldn’t get through. A. choked up by B. choked up w
阅读理解；阅读下列图表，从每题所给的A、B、C三个选项中，选出最佳选项回答或完成句子RouteChiang Mai—Luang PrabangChiang Mai---Koh SamuiDay 2,3,5,7
Laying eggs the ant queen's full-time job. A. is B. are C. has D. have
