Saving the earth is too hard for _____ individual, but every little thing you do makes _____ difference. A. an; a B. the; /
In the course of working my way through school, I took many jobs I would rather forget. But none of these jobs was as terrible as my job in an apple factory. The work was hard; the pay was poor; and
已知向量a=(cosx,sinx),b=(sin2x,1-cos2x),c=(0,1),x∈(0,π).(1)向量a、b是否共线?请说明理由.(2)求函数f(x)=|b|-(a+b)·c的最大值.
某元素R的氧化物的化学式为,其式量为M,R的相对原子质量是()。A. B. C. D.
.根据文意分析不正确的一项是( ) A.选段开头的“六世”是指秦孝公、惠文王、武王、昭襄王、孝文王、庄襄王六代。 B.从这段文章可以看出
28、(每空1分,共10分)本题含两幅图,请依照题意,据第一幅图回答(1)—(6)问,据第二幅图回答(7)问:([ ]内填数字)右图是某种生物的细胞
定义:函数y=ax叫做指数函数,它的 ,即y= 叫做对数函数(其中a>0,且a≠1).
下面各句,表意明确的一句是 ( ) A.这篇文章所持的观点是批判抵制反对社会革命的思想行为。 B.她只好带着年仅两岁的孩子和80岁的祖母