My partner wants to keep the company small _____ I’d like to expand it. A. and B. or C. however
用锤子以相同的力将铁钉垂直钉入木块，随着铁钉的深入，铁钉所受的阻力也越来越大．当未进入木块的钉子长度足够时，每次钉入木块的钉子长度是
（本题满分12分）已知函数，的图像与直线的两个相邻交点的距离等于, (Ⅰ)求 的解析式及单调递增区间; （Ⅱ）求在区间上的最大值和最小值.
“龟兔赛跑”讲述了这样的故事：领先的兔子看着缓慢爬行的乌龟，骄傲起来，睡了一觉。当它醒来时，发现乌龟快到终点了，于是急忙追赶，但为时
The other day, my brother drove his car down the street at the highest speed ______ I have never seen. A. as B. which
（2009·重庆）根据化学方程式A＋NaOH== B＋H2O推断，B,A的相对分子质量相差（ ）A．12 B．18 C．22 D．40
Where and how you eat are just as important as what you eat. Take this test to find your eating style to make sure you’re getting the nutrition (营养) you need. Which statements sound like you?
自然景观①②③④这种地域分异最明显的地带是 苔原 亚寒带针叶林 ①森林②森林草原③草原④荒漠 A．赤道附近地区 B．北半球中
