Read the article and select the best answer. Article: Ever since farmers began to grow grain, they have had to protect their crops from birds. In the 1300's, English farmers hired children to protect their crops. They were called "bird scares". The children chased birds and threw stones at them. Bird scares were replaced in the 1800's by scarecrows. A scarecrow is anything that is set in a field to scare birds away. Often it is a pole dressed like a person. Some farms with small fields still use scarecrows today. Farming became big business in the twentieth century. Scarecrows could no longer protect the huge fields of grain, so farmers used poisonous chemicals on the fields. The poison made the grain bitter. The birds usually would not eat the bitter grain. Although they can prevent crops from being destroyed by insects and birds, some chemicals can be harmful to humans. Therefore, farmers are using fewer chemicals now than they did twenty years ago. Perhaps scarecrows may be seen more often in the fields in the future. Question: "Bird scares" keep birds away from crops by _ . Options: A: feeding them bitter grain B: pretending to be scarecrows C: spreading chemicals in the fields D: chasing them and throwing stones
D

Read the article and select the best answer. Article: Wearing seat belt is,of course,the first step to safe driving.These additional measures might also save your life. Count to three.Keeping up enough space between your car and others is extreme1y necessary.Jim Clark,a California driving instructor,suggests a least amount of three seconds'following distance.To figure this,pick an object on the roadside ahead.When the car in front of you passes it,start counting one-thousand-one,one-thousand-two,one-thousand-three.If you get to that object before you reach one-thousand-three,you don't have three seconds of following time --- time needed to keep away from accidents. Let followers pass."If someone's driving after you,get out of his way,"Clark advises."You're better of being safe than right." Expect the worst.In a study,the Federal Highway Administration found that 68 percent of drivers do not come to a complete stop at stop signs.When you're driving and see someone come near to a stop sing,assume the person's not going to stop. And when you stop at a crossing and another car comes near with its turn signal on,don't take it true that the driver will turn.Instead,wait until he turns.He may have had the signal on for miles. Stay outside.In crowd,multilane traffic,drive in either the outside--left or outside--right lane."That allows you somewhere to go if a problem develops,"traffic expert Francis Kenel says."If you're in the middle,all you can do is to pause from time to time." Question: When you finish counting"one-thousand-three",you have . Options: A: driven one thousand and three metres B: kept three seconds'distance from other cars C: counted a lot of numbers D: kept a long distance from the object
B

Q: Read the article and select the best answer. Article: A 33-year-old financial analyst in California recently quit his job to devote himself to an unpaid job teaching math on the Internet, and his lessons are reaching almost 100,000 people a month. Salman Khan's voice is heard every day on the net -- by tens of thousands of students around the world who are hungry for help learning math. He has posted 1,200 lessons on You Tube --lessons that appear on an electronic blackboard, which range from basic addition to advanced mathematics for science and finance. And they are free. Khan lives in Silicon Valley, with his wife, a doctor, and their new baby. He got the idea for his "Khan Academy" four years ago, when he taught a young cousin how to convert kilograms to grams. With Khan's help, the cousin got good at math, and Khan began a new career. Now, Khan records his lessons himself, but he never goes on camera. "It feels like my voice in their head. You're looking at it and it feels like someone's over your shoulder talking in your ear, as opposed to someone at the blackboard, which is distant from you," he said. When Springfield High School in Palo Alto, California invited Khan to speak in person--he immediately connected to the students there. The idea of short lessons that can be played over and over again attracted high school senior Bridget Meaney. She says she had trouble with math in the seventh grade. "I think the teachers are good, but they can't teach at a speed that's perfect for everyone," she said. "I like the idea of learning something in class but then going back and pressing pause or rewind and actually getting a deeper understanding of it." Originally, Khan kept his lessons short because of YouTube restrictions. Now, he thinks short is better. "Education researchers now tell me that 10 minutes is how long someone can have a high level of concentration. And anything beyond that and your brain switches off," he said. For Khan, teaching math, science, and finance is just the beginning. He says he's ready to expand his YouTube site to include other... Question: What gave Khan the idea of teaching math online? Options: A: His success in helping his cousin learn math. B: His discovery that many students found learning math difficult. C: A suggestion made to him at a local high school. D: His interest in Internet teaching.
A: A

Read the article and select the best answer. Article: HANGZHOU, China -- Millions of Chinese basketball fans who were upset about the retirement of Yao Ming, are excited to see another even more shining star, Jeremy Lin, rising from the N.B.A and becoming a household name all across China. "We are amazed by Lin Shuhao's magic performance and should cheer him on," one Internet user wrote. "His sport shirts have sold out, even including the counterfeit ones," said Zheng Xiaojun, a 24-year-old clerk. Lin's amazing success over the last month has caught the imagination of the Chinese. He has been particularly popular here in northern Zhejiang province, from which his grandmother went to Taiwan in the late 1940s. Cai Qi, a well-known micro blogger, posted a message on micro blog over the weekend stating that Lin's hometown is Jiaxing, a city near Hangzhou where Lin's grandmother grew up. Cai Qi's nephew Yu Guohua, a 56-year-old factory worker, is Lin's closest still living in northern Zhejiang. He said in a telephone interview that Lin had come to play basketball with the Jiaxing High School team last May and had been surrounded by admirers. Yu said he did not have a chance to meet Lin in the crowd, but managed to speak with his family. "His father was very supportive of Lin's playing basketball, but his grandmother was not, for fear he would be injured," Yu said. Lin may owe his height, 6 feet 3 inches, to his grandmother's family, Yu said. Chen Weiji, the father of Lin's grandmother, was well over 6 feet and all of Chen's children were tall as well, he said. The N.B.A. believes that 300 million people in China play basketball. The retirement last year of Yao Ming took its main Asian draw away from the N.B.A. But Lin's appearance has helped the league remain a hot topic of Chinese online chatter. Question: We can learn from the text that _ . Options: A: Lin once played on Jiaxing High School team B: All Lin's s moved to Taiwan 60 years ago C: Lin's grandmother didn't expect him to be a player D: Lin's father loved playing basketball
C