已知双曲线的两条渐近线与直线围成一个三角形区域,表示该区域的不等式组是() (A) (B) (C) (D)
While waiting for the opportunity to get , Henry did his best to perform his duty. A. promote B. promoted C. promoting D. to promote
The game ________ at 4:00 P. m. A. finish B. finishes C. finishing D. to finish
我国改革30年来,经济快速稳健发展,人民生活水平日益提高,综合国力不断增强,社会各项事业取得可喜的成就。改革的根本目是: ①调动和提高人
一电场的电场强度随时间变化的图象如图所示,此电场中有一个带电粒子,在t=0时刻由静止释放,若带电粒子只受电场力的作用,则下列判断正确的是(
下列各句中,没有语病的一项是 ( ) A.有些老师在收取学杂费、班费时,为防止收到假币,要求学生把姓名写在人民币
Runners who encounter visual and auditory(听觉的) distractions(分心) may be more likely to suffer leg injuries, according to a research by the Association of Academic Physiatrists in Las Vegas
下列各组运算结果中,数值最小的是( ) A.-(-3-2)2 B.(-3)×(-2) C.(-3)2÷(-2)2 D.(-3)2×(-2)