“他们号召用现代西方的标准，重新评价中国的文化遗产，乐意地与引致中国衰弱的那些因素决裂……对中国过去引入了一种全面否定的新态度。就深度和广度而言，这场思想变革超过1895—1911年期间的变革。”文中的“这场思想变革”（     ）

根据短文内容判断正误。

    U2 is the name of a band from Ireland. It's one of the most famous rock bands in the world.

    In l978, a l7-year-old high school student, Larry Mullen, looked for some musicians to make a band. Finally, he found another three boys and they set up a band. The four boys named their band U2.

    They travelled a lot and gave concerts in many countries. More and more people got to know them and love their music. Many of their songs, such as Beautiful Day and Walk On, were popular. In the l980s, the band became famous.

    Now the four members of U2 are still good friends and their music is still popular. People in the world still enjoy their music.

饮用硬水对人体健康不利，要区别井水水样是硬水、还是软水，可选用 （    ）

请根据凹透镜对光线的作用完成光路．