如图甲所示为一列沿水平方向传播的简谐横波在时刻t的波形图，规定质点振动速度的正方向为沿+y轴方向，图乙所示为质点b从时刻t开始计时的v﹣t图像．则下列说法正确的是（   ）

    One of the easiest things in the world is to become a fault-finder. However, life can be 1when you are not busy finding fault with it.

    Several years ago I2a letter from seventeen-year-old Kerry, who described herself as a world-class fault-finder, almost always 3by things. People were always doing things that annoyed her, and 4was ever good enough. She was highly self-critical and also found fault with her friends. She became a really 5person.

    Unfortunately, it took a horrible accident to change her 6Her best friend was seriously hurt in a car crash. What made it almost 7to deal with was that the day before the 8, Kerry had visited her friend and had spent the whole time criticizing her 9 of boyfriends, the way she was living, the way she related to her mother, and various other things she felt she needed to 10It wasn't until her friend was badly hurt that Kerry became 11her habit of finding fault. Very quickly, she learned to appreciate life rather than to 12 everything so harshly ( 刻薄) . She was able to transfer her new wisdom to other parts of her13as well.

    Perhaps most of us aren't as extreme at fault-finding,14 when we're honest, we can be sharply 15of  the world. I'm not suggesting you16problems, or that you pretend things are17than they are, but simply that you learn to allow things to be as they are—18most of the time, and especially when it's not a really big 19 .

    Train yourself to "bite your tongue" , and with a little 20, you'll get really good at letting things go. And when you do, you'll get back your enthusiasm and love for life.

    I live with my grandmother in a Beijing yard house. One day last year, I was surprised to see a big foreigner coming out of the house next door to ours. He was very tall with short brown hair and a pair of glasses.

    The first time I saw him, I was too shy to speak to him. “My English is too poor!” I thought. My grandmother told me that he had just moved into our yard. “I don't like it!” she said. “Foreigners aren't like us. Maybe he'll play loud music and parties every night! I'm sure he's going to cause trouble.”

    Several days later, I met the foreigner as I was walking home after work. “Hello!” he said (in Chinese！). “My name's Tony. I've just moved into the house next door to yours.” While I was wondering what to say, he continued, “There's a nice bar down the road. Why don't you and your family come and have dinner with me?” “Bars are bad places,” said my grandmother when I told her, but we decided to go.

    The bar was not at all what I had expected. It was in a beautiful little yard house, with several large bookshelves and pictures of Tibet on the walls. Several Chinese people and foreigners were sitting drinking or reading books. I noticed that some of the foreigners were speaking Chinese in a low voice to each other! “Oh, what a civilized place!” my grandmother exclaimed.

    The bar served special “hutong pizzas”. As we ate, Tony told us about himself-he is an English expert in environment. He always likes to be quiet. My grandmother said to me, “He really seems like a very nice young man.”