题型:阅读选择 题类:模拟题 难易度:困难
江苏省连云港市赣榆区2020年九年级中考英语三模试卷
Monkeys seem to have a way with numbers.
A team of researchers trained three Rhesus monkeys to associate 26 clearly different symbols made up of numbers and selective letters with 0-25 drops of water or juice as a reward. The researchers then tested how the monkeys combined—or added—the symbols to get the reward.
Here's how Harvard Medical School scientist Margaret Livingstone, who led the team, described the experiment: In their cages the monkeys were provided with touch screens. On one part of the screen, a symbol would appear, and on the other side two symbols inside a circle were shown. For example, the number 7 would flash on one side of the screen and the other end would have 9 and 8. If the monkeys touched the left side of the screen they would be rewarded with seven drops of water or juice; if they went for the circle, they would be rewarded with the sum of the numbers—17 in this example.
After running hundreds of tests, the researchers noted that the monkeys would go for the higher values more than half the time, showing that they were performing a calculation(计算), not just remembering the value of each combination.
When the team studied the results of the experiment more closely, they noticed that the monkeys tended to underestimate(低估)a sum compared with a single symbol when the two were close in value—sometimes choosing, for example, a 13 over the sum of 8 and 6. The underestimation was systematic: When adding two numbers, the monkeys always paid attention to the larger of the two, and then added only a fraction(小部分)of the smaller number to it.
"This shows that there is a certain way number is represented in their brains, "Dr. Livingstone says. "But in this experiment what they're doing is paying more attention to the big number than the little one. "
In today's world, there are lots of reading apps that can meet the different reading interests of people of all ages. Now let's take a look at some great reading apps. ComiXology ComiXology is one of the oldest and most popular services for reading comic(漫画的) books online. The ComiXology online store is now owned by Amazon. It offers thousands of new and classic comic books from big publishers like Marvel Comics. Media365 Media365 is a free app for Android(安卓). You can read all the books in its library. Writers can publish(出版) their own books on the Media365 platform(平台). There are also many popular books there, like the Harry Potter series. Hoopla Digital It's another good app that uses the kid's library card. It's great for people of all ages. Kids can borrow free eBooks, music and other things from the local public library. No wonder it's one of the top 15 book apps in the App Store. |
注意:(1)必须包含表格中所给伯息,可适当发挥,使全文连贯、通顺: (2)文中不得提及真实的人名、校名等相关信息: (3)词数80﹣100词,开头和结尾已给出,不计入总词数。
Date | January 29 |
Place | School Hall |
Activities | ●enjoy tea processing ●learn how to do paper cutting ●. . . |
Purpose | ●learn Chinese culture ●. . . |
Hello,everyone!Next week,we'll have some activities about Chinese traditional culture. Here's the plan for you.
Hope you enjoy the activities and have a good time!
试题篮