增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
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Plogging, that is a new way to exercise, is becoming popular with runner worldwide. Many of them are posting photos of themselves and friends hold bags of litter on social media. A Swedish man called Erik start the movement. He became terrible worried about the amount of litter on the road but decided not to go to work by bike any more. Instead, he began to run to work and pick them up at the same time. To his happy, more and more people joined in him and soon plogging became popular. Many people choose plogging because they think plogging not just benefits earth; it is also a good way to exercise.
2 . Exercise could not only benefit your body, but also improve your memory, researchers found recently. In their paper published on Monday, researchers from the University of California, Irvine in the United States and the University of Tsukuba in Japan introduced their experiment and conclusion.
Scientists invited 36 volunteers who were in their early 20s to do 10 minutes of light exercise before taking a memory test in which they were shown pictures like broccoli（西兰花）or picnic baskets and asked to recall them later. The same experiment was repeated with the same group of volunteers without exercising. u The memory task was really quite challenging , " said Michael Yassa,co-author of the study and a neuroscientist （神经科学家）at the University of California, Irvine. "We used very tricky similar items to see if they would remember whether it was this exact picnic basket versus （对抗）that picnic basket. "
Researchers also scanned brains of some, of the participants during the experiment. They found strengthened communication between regions involved in the storage and recollection of memories in brains of those who had exercised. This suggested that just 10 minutes of light exercise like walking,yoga or Tai Chi might increase memory power.
As all the volunteers in the experiment were relatively young, researchers are still working to look at the effects of light exercise on older people. "Our future goal is to try to develop an exercise prescription（处方） that can be used by older adults who might have disabilities or mobility impairments,but can still adopt very simple exercise rules of life and be able to,perhaps,delay cognitive decline temporarily," said Yassa.
1. What did the researchers find from the experiment mentioned in the text?| A．Regular exercise is of benefit to the memory of all people. |
| B．Just a short period of exercise better young people's memory power. |
| C．Older people can also improve their cognitive power by exercising regularly. |
| D．All the volunteers in the experiment improved their memory through exercise. |
| A．The time to solve the questions was too limited. |
| B．The people in the experiment were disabled. |
| C．The items to be distinguished were extremely similar. |
| D．The questions asked by the scientists were too complicated. |
| A．.To solve a problem. | B．To give practical advice. |
| C．To present a research result. | D．To tell an interesting story. |
| A．Advantages of Exercising Regularly |
| B．Exercise Is Beneficial to Both Young and Old |
| C．Exercise Can Improve Older People's Cognitive Power |
| D．Ten Minutes of Exercise a Day Might Improve Memory |
