题目

有765朵花，每9朵扎一束，每5束放在一个篮子里，需要多少个篮子？ 答案：解：765÷9÷5＝17（个） 答：需要17个篮子。Many animals around us are smart. Let’s get to know some of them.Dolphins are smarter animals in the sea. Researchers put sea animals to a test. In the test, the researchers made red marks on the animal’s bodies and took them in front of a mirror. Many sea animals either ran away or fought with the ones in the mirror. However, when the dolphins saw themselves in the mirror, they tried to clean the red marks off their bodies. So the researchers believed that the dolphins knew the ones in the mirror were just themselves.Bees work hard, and they are smart enough to learn something. Researchers found a group of bees and taught them to tell which horizontal line (水平线) was higher than the other. If they could find the higher line, they would get sugar as a prize. After training for a period of time, the researchers tested the bees. To their surprise, the bees found the higher horizontal line quickly and got sugar. Instead, when the researchers showed them vertical lines (垂直线), the bees simply flew away, because they knew there was no way to get sugar.Chimpanzees (黑猩猩) are very human-like. They can learn fast and well. Researchers showed the numbers from one to nine on the screen. Chimpanzees and some college students were asked to remember where the numbers were after watching the numbers in less than a second. The adult chimpanzees and the college students performed almost the same, but the young chimpanzees performed much better. It was amazing.1.In the test, the dolphins _______________.A. felt afraid and ran away from the mirrorB. tried to fight with the ones in the mirrorC. didn’t find any red marks on their bodiesD. tried to clean the red marks off their bodies2.When the bees saw the vertical lines, they _________.A. flew awayB. found the higher lineC. stayed thereD. found the numbers3._____________ performed better in remembering where the numbers were.A. The adult chimpanzeesB. The old chimpanzeesC. The young chimpanzeesD. The college students 1.D 2.A 3.C 【解析】本文介绍了几种比较聪明的动物：海豚，蜜蜂和大猩猩。 1.句意：在测试中，海豚试图清除身体上的红色标记。A.感到害怕并逃离镜子B.试着和镜子里的自己打架C.他们的身上没有发现任何红色标记D.试图清除身体上的红色标记。原文“they tried to clean the red marks off their bodies.”（它们试图清除身体上...