I have a terrible ______ in my chest. When I cough, it really hurts. A) pain B) ache C) wound D) injury
与下图中丁气候类型相同的城市是 A．长沙 B．宜昌 C．太原 D．合肥
如图是二次函数y=ax2+bx+c的图象的一部分，对称轴是直线x=1.①b2＞4ac；②4a-2b+c＜0；③不等式ax2+bx+c＞0的解集是x≥3.5；④若(-2，y1),(5,y2)是抛物线上的两点
西亚地区是当今世界关注地区，读右图回答问题。 （1）、沟通①和④的海峡是__________海峡。 （2）、大洲界线⑤是___________________
关于南北美洲气候和资源的比较，正确的是 A．西部沿海地区的气候类型大致相同 B．两洲都有大面积温带大陆性气候 C．东部高原都蕴藏着丰
- Guess, how much does it cost? - I think it costs 15 and 20 dollars. A. from B. between C. among
已知关于的方程的解是正数，则m的取值范围 是_______________．
Peter wondered why he didn’t have many friends. The reason was he was always taking, never giving. One day Peter told Bill, “I’d like to give a party on Saturday, I’d like you to come and brin
