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.

下图曲线表示一种酶在某种不同处理条件下催化某反应时反应物的剩余量和反应时间的关系，造成a、b、c曲线不同的原因不可能是

阅读理解．

阅读下列材料：

老师提倡同学们自己出题，下面是王海同学出的两道题及解答过程：

题目1：已知（a﹣3）²+|b﹣1|=0，求a，b的值．

解：∵（a﹣3）²+|b﹣1|=0，

∴a﹣3=0，b﹣1=0．

∴a=3，b=1．

题目2：已知（a﹣3）²+|b﹣1|=1，求a，b的值．

解：∵（a﹣3）²+|b﹣1|=1，

∴（a﹣3）²=0，|b﹣1|=1或（a﹣3）²=1，|b﹣1|=0．

∴a=3，b=0；a=3，b=2；a=4，b=1；a=2，b=1．

老师说：“题目1的解答过程跳步了．题目2在编制时应该再添加已知条件”．

请阅读以上材料，解答下列问题：

（1）补全题目1的解答过程；

（2）依据题目2的解答过程，题目2中应添加的已知条件 ．

①在两个同样的烧杯中，分别装入等体积的水和煤油；

②用两支温度计分别测出水和煤油的初温；

③在烧杯中，分别使用功率相同的电热器，并加热相同的时间；

④用温度计分别测出水和煤油的末温.

请根据以上叙述回答下列问题：