问题
填空题
南朝的________是我国古代著名的数学家和天文学家，他在多方面取得成就，最突出的是在数学领域求得比较精确的_______，在世界上第一次把圆周率的数值计算到小数点后的第________位数字，这项成果领先世界________年。
答案
祖冲之；圆周率；7；近一千
搜题请搜索小程序“爱下问搜题”
南朝的________是我国古代著名的数学家和天文学家，他在多方面取得成就，最突出的是在数学领域求得比较精确的_______，在世界上第一次把圆周率的数值计算到小数点后的第________位数字，这项成果领先世界________年。
祖冲之；圆周率；7；近一千
| 任务型读写。阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。 注意：每个空格只填一个单词。 | ||||||||||
| In a memory-based competition between you and a chimp (猩猩); who do you think would win? If you put yourself on top, you might want to guess again. In a test that challenged participants to remember numbers, a young chimp performed better than Japanese college students. Here's how the test worked. At Kyoto University in Japan, human students and chimpanzee participants sat in front of a computer. Five numbers, ranging from 1 to 9,were combined with one another and then, they appeared at random places on the screen. The numbers stayed on the screen for less than a second. In the first test, for example, participants saw the numbers for 650 milliseconds (about two-thirds of a second). Then, each number disappeared and they saw a white square instead. Participants had to touch the squares in numerical order, based on the numbers that had been there a moment before. In this test, the students touched the boxes in the correct order about 80 percent of the time. A young chimp named Ayumu performed equally well. During a harder test, participants were only able to see the numbers for 210 milliseconds. This time, students only succeeded in putting the boxes in the correct order about 40 percent of the time. But Ayumu still could select the boxes in the right order nearly 80 percent of the time. Some people have what's called a "photographic memory," which allows them to remember a surprising number of details after just a quick glimpse of something. Ayumu's memory might work in a similar way, says lead researcher Tetsuro Matsuzawa. The chimp's young age might have something to do with his impressive perfomance, too. In previous tests, the Japanese researchers found that young chimps perfomed better than their mothers. The scientists are interested to see whether Ayumu loses his strong memory as he gmws older. They already know that young children sometimes have sharp memories when offered something photographical, but they lose this ability over time. | ||||||||||
|