Ⅰ. 完形填空
阅读下面的短文,从每题所给选项中选出可以填入空白处的最佳选项。
Are you interested in making new things? Inventions always play an important role in our daily life. They make our life more 1 and much easier than before. A university class 2 helped two young women create a great idea for a difficult problem. Julia and Jessica are students in Harvard University. One day, 3 teacher said at the class, "I want you to solve a world problem about the energy source(能源)."
"Who can 4 this task?" After hearing that, Julia and Jessica started to feel excited. They wanted to take that challenge. So they answered, "We decided to accept the difficult task." Before they 5, they thought they had to do some research first. They first studied many different 6 with few energy sources.
They found the 7 that both adults and children in these countries played football. 8 Julia and Jessica decided to create a new energy source that could have something to do with football.
Though they had an idea, it was a bit hard for them to create a football with a battery(电池). Then they asked their friends for help. They 9 with their friends to make a football with a battery in it. It took them a long time, but it 10 turned out to be a big success. They knew the football was exactly 11 they wanted. They named their ball the SOCCKET and showed it 12 the users.
When the players 13 the ball, the battery inside caught the energy from the ball's movement. After 14, the players used the energy in the battery to make the smartphones work. It is 15 that a simple project can make our lives better! Small things always make a big difference.