完形填空 先通读下面的短文，掌握其大意，然后从下面四个答案中选择可以填入相应空白处的最佳答案。（本大题共10分，每小题1分） Umbrellas are common in daily life. On rainy days, many people hold them to prevent (阻挡) the. But it’s not easy to hold an umbrella if there israin and strong wind. And it’s harder to make a phone call or ride a bike an umbrella in the hand. An American named Alan Kaufman and his company six years inventing (发明) a hand-free umbrella., they made it. They called it Nubrella. Just touch a button (按钮), and the Nubrella will open. With the help of the “shoulder support”, the umbrella can rest on the user’s. So the user needn’t hold the umbrella any more. He can walk with hands even in the strong wind. The hand-free umbrella is 59.94 dollars each. People all around the world like it very much. Because of this smart invention, they can use their phones to talk and send short in the rain now. in the rain under a Nubrella is really cool, isn’t it?