Our planet is having problems and needs help. It is believed we are using up oil in the next fifty years. As itsprice keeps going up, life has become more difficult for everyone. Luckily, one of the richest people on theplanet is trying to change that.        Mill Gates has donated millions of dollars to help make the world a better place. Finding a cleaner source ofenergy is the first thing on his list. He says it must last a long time and can’t be expensive. However, he’s notsure if something can be found soon.      Next, Gates is working on helping people in poorer countries clean drinking water. It is not easily found, andit often comes at a high price. Besides, the water is always collected by women and girls. They may stand in lineand wait for water, they may walk long distances to collect water, and they may spend up to six hours a daycollecting water for their families. Gates also wants people to know how hard it is for them.    Finally, getting children and adults a good education is very important to Gates. He thinks that education iswhat everyone should be given to lead a successful life. He believes that happy people comes a happy world. 
【題組】29. What is the reading mainly about?
(A) A helpful person.
(B) All the world’s problems.
(C) What we can do to save water.
(D) The end of the planet.