小亮的实验是“探究同种物质的质量与体积的关系”，他选择了三个体积不同，质量分别为

英译汉，译文写在答题纸上。（5分）

Suddenly it hit me how difficult it was for a woman to get medical training at that time. That was a generation when girl’s education was always placed second to boys’. Was she so much clever than anyone else? Further reading made me realize that it was hard work and determination as well as her gentle nature that got her into medical school. What made her succeed later on was the kindness and consideration she showed to all patients. There was story after story of how Lin Qiaozhi, tired after a day’s work, went late at night to deliver a baby for a poor family who could not pay her.

5个百和2个千组成的数是______．

人类社会是在不断进步和发展的，治国方针也应随之与时俱进，改革是时代的要求和必然的选择。中外曾出现过许多著名的改革，并对历史产生了巨大的影响。请回答下列问题：

（1）哪次改革为秦完成统一大业奠定了基础？这次改革与土地相关的措施是什么？

使人遵守道德的两大途径是（）

①良心

②教育

③名誉

④法治

A、①②

B、①③

C、②③

D、②④

视觉信号的基本颜色有（）种。