如图10所示，物体甲的长度为 cm，停表乙的示数为 s。
已知线段a,b,c,求作a,b,c的第四比例项x..
为贯彻落实民族区域自治法，1949年《共同纲领》明确确定“各少数民族聚居的地区，实行民族区域自治；1954年将民族区域自治制度载入宪法；1984年颁
Some women a good salary in a job instead of staying home, but they decided not to work for the sake of the family. A. could have made B. should have made C. would make D. must mak
When students and parents are asked to rate subjects according to their importance, the arts are unavoidably at the bottom of the list. Music is nice, people seem to say, but not important. Too often
词汇：根据句意及首字母或中文提示，完成下列单词的拼写 1. Eating too much and doing little exercise makes us u__________________. 2. It's very important for the students to k
下图反映的是哪一时期的边境贸易? （ ） A．东晋 B．南朝 C．北宋
“作为距离香港最近的城市，它最早成为中国开放的特区，与新中国改革开放的步伐共舞，短短的十几年时间，它已从一个小渔村迅速发展成中国最年
