1 . The highlights of every World Cup are the impossible goals, especially the arc (弧线) ball goals. It’s breathtaking to watch. Every spin (旋转) of the ball moves air across the surface, pushing it into a bend.
When a soccer ball flies, the air forms a layer around the surface of the ball. As the balls pins, it changes the direction of the air to one side, says John Bush, an applied mathematician at MIT. This air pushes the ball in the opposite direction. The player starts with a strike on the outside of his right foot, which hits the left side of the ball, starting a clockwise spin. It throws the air off to the left, and the force created by the air leaving the ball pushes it to the right, explains Bush. Thus, a ball spinning to the right (that’s clockwise) will also are towards the right. This force is called the Magnus Effect.
It helps the goalkeepers, because they see uniform curvature (曲度) when players are taking bending shots at them. If they can pick up the spin right, it’s going to be the same amount of curvature, and they know where to put their hands. This is partly why players are much more likely to take bending shots during free kicks when goalkeepers can’t see their kicks quite as well because of the wall of defenders. If a ball isn’t spinning, it does something called knuckling, where the air turns the ball to one side in random directions, causing it to bounce in the air unpredictably. “It’s usually achieved when a player manages a sharp, fast touch of the ball, typically right on the air valve where the ball is most firm.” says Bush. Its lack of spin kept the goalkeeper from being able to predict where it was going until it was too late. All the goalkeepers tremble before the kicker that can shoot this kind of soccer ball.
1. What is the Magnus Effect according to the text?| A．The force applied to a spinning ball. |
| B．The theory proposed by John Bush. . |
| C．The direction opposite to a player’s strike. |
| D．The goal scored with a bending ball. |
| A．Because they can change the ball’s curvature. |
| B．Because they can take bending shots more easily. |
| C．Because they can get a cover from the wall of defenders. |
| D．Because they can help their team’s goalkeeper. |
| A．A free-kick shot. |
| B．A fast shot without spinning. |
| C．A shot with a unique curvature. |
| D．A bending shot without defensive blocking. |
| A．The Development of Football | B．The Principle of a Bending Ball |
| C．The Secret of Blocking a Goal | D．The Theory of Applied Mathematics |
During the summer before Patty entered fifth grade, she decided to try a new sport. Swim training was nearly over and Patty was the fastest swimmer in her age group. She had always been the best. The neighborhood was offering a one-week tennis training course. Patty and her friend Darla got permission from their parents to join.
On Saturday morning, Darla’s mom took the girls to a store and bought them each a good, used tennis racket. “If you girls stick to tennis, then we’ll talk about a new racket. These will do for now.” The girls were excited about their new purchases. On Monday morning, at 7:00 a.m., Patty’s mom woke her up. “It’s time for tennis!” Patty covered her face. “Mom, it’s too early!” She made great effort to get out of bed and down to the breakfast table. Patty finished breakfast and ran to Darla’s house, then they walked to the court.
Mrs. Cane, the tennis coach, lined everyone up and started with the basics. After that, Mrs. Cane tirelessly taught them to practice their forehand and backhand. By the end of the week, Patty had made impressive progress. Mrs. Cane commented that Patty had lots of potential. Darla, on the other hand, was struggling. The other teenagers were having a tough time of it, too. Patty was the only one who seemed to get somewhere.
Since then, Darla had always been out in the August heat, practicing her serves or hitting the ball. Patty wasn’t really interested. She felt she was such a “natural” for tennis that she really didn’t need to practice. By the end of the summer, Darla began to get the hang of it. She joined a neighborhood junior tennis team. There would be matches every Thursday. Patty wanted to join as well, but she didn’t want to miss her favorite TV show. She told herself that she would join it when she got some free time. If Darla had fun, she would join the team in the spring.
注意：
1. 续写词数应为150左右；
2. 请按如下格式在答题卡的相应位置作答。
The week before school started, Mrs. Cane held another training course.
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Patty couldn’t stop thinking of her poor performance on the way home.
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1. 推荐一款APP和推荐理由；
2. 给出运动建议。
注意：1. 词数100左右；
2. 开头和结尾已给出，不计入总词数。
Dear Jim,
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Yours,
Li Hua
Gu Ailing,
With the Winter Olympics
People say that Gu Ailing is
When it comes to the reason
5 . Accompanied by her father, using a combination of aid and free climbing and taking advantage of some special equipment and ropes for protection, 10-year-old Selah made it to the top of El Capitan on June 12 after five days of big wall climbing.
Climbing the challenging and adventurous Nose route of El Capitan was a labor of love for Selah in more than one way. Her parents , Mike and Joy Schneiter, fell in love on this 3,000- plus-foot huge rock and she has always wanted to feel the way that her parents felt when they were up there together. Selah showed great interest in rock climbing at an early age. She wore her first rock-climbing equipment shortly after she learned to walk. She first dreamed of climbing El Capitan when she was 6 or 7.
El Capitan is a famous mountain-sized rock in Yosemite National Park. Getting to its top is no easy task. It's taller, as reported, than the tallest building in the world-Dubai’s Buri Khalifa. El Capitan and its difficult Nose route, which runs more than 3,000 feet high up the center of the rock's face, is considered one of the world's hardest big wall climbs and has attracted the best climbers over time. But never before had a youngster accomplished it.
Selah's achievement caught national attention. Outside Magazine called her the youngest documented person to climb the Nose. Ken Yager, president of the Yosemite Climbing Association, said he also couldn't think of anyone younger who has done it.
Selah is humble about her El Capitan accomplishment. "I'm not necessarily a special kid or anything like that, she said. "There were a few times when I would be so worn that it would kind of discourage me from holding on. But overall, it was just great to keep plugging away.”
Selah shared this advice for other young climbers dreaming of big walls, "It doesn't take necessarily a super special person to do something like that. You just have to put your mind to it.”
1. What do we learn about Selah climbing El Capitan?| A．She began her climbing on June 5. |
| B．She got inspired by her family history. |
| C．She managed without any external help. |
| D．She was the first female to reach the top. |
| A．To state El Capitan's height. |
| B．To prove El Capitan's popularity. |
| C．To introduce El Capitan's location. |
| D．To stress the challenge of climbing El Capitan. |
| A．Determined. | B．Generous. |
| C．Warm-hearted. | D．Fortunate. |
| A．Dream big and aim high. |
| B．Be committed to your ambition. |
| C．Chance favors the prepared mind. |
| D．Nothing is impossible for a genius. |
