Why It Is Crucial That Elephants Have Good MemoriesAN ELEPHANT'S memory is critical to the survival of its family, scientists have discovered, in a study that underpins the importance of age and experience in the animal kingdom.
【题目】People have been wondering why elephants do 1. Why are elephants unlikely to develop cancer?not develop cancer even though they have lifespans(奉命) that are similar to humans, living for around A. They have a rather large body size.50 10 70 years. B. Their genes suffer no DN ...
Another one of the roles and importance of elephants in the ecosystem is creating homes for smaller creatures. Unexceptional small species do not have the size to knock down trees or create holes in the ground to create a home. These animals rely on elephants to do that for them. Elephants...
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there was no evidence of significant loss of bone density. Hibernating brown bears do not have this capacity and must therefore resort to major bone reformation(采取大规模骨骼重塑)in the following spring.If the mechanism of bone remodelling in polar bears can be understood, many bedridden (卧床)...
D People have been wondering why elephants do not develop cancer even though they have lifespans(命) that are similar to humans. living for around 50 to 70 years.Now scientists believe they know why. A team at the University of Chicago. US has found that elephants carry a large number of...
【解析】 Test04 阅读理解A 1 3 科学家研究发现,大象不患癌症是因为它们的体内有很 多阻止肿瘤生长的基因TP53,人们有望通过制造TP53预防 癌症 1.D 推理 断 根据文章第二段中elephants carry a large number of genes that stops tumors developing 带的抗癌基因多。 故选D 2.A 细节理解题。根据第四段第一句...
() 1. Why do elephants walk slowly? A. Because they are very big. B. Because they are quiet. C. Because they have long and strong teeth. D. Because they want to look for food. () 2. Where do wild elephants live? A. In the zoo. B. In the grass. C. In ...
After that, make a speech about protecting elephants. (Justification: In this step, students can think deeply about the endangered animals. Their speaking ability can be improved. ) Step 5 Summary and homework Summary: Invite one student to summarize what we have learned today. Homework: Color ...