“A species tends to grow bigger when it reaches the peak of its population , but becomes smaller when numbers decline,” he said.
The dental remains of the skull, which is the oldest giant panda skull ever found, are similar to today’s pandas, indicating the type of teeth that could munch (津津有味地嚼)mountains of bamboo. A panda can eat up to 40kg of bamboo per day.
Paleoanthropologist Russell Ciochon, the US co-author at the University of lowa, said the panda’s focus on bamboo could have helped it survive all these years.
“Once an animal begins to rely on a common and stable food source, such as bamboo, it tends to evolve a larger body size,” he said. “As individuals of the evolving species grow bigger, they have a better chance not to be eaten by predators (肉食动物) due to their larger body size.”
1. According to the research of the CAS , there were most pandas in the world
.
A. 2 million years ago
B. between 2.4 and 2 million years ago
C. 500,000 years ago
D. Nowadays
答案解析:答案为C。本题为细节题。第四段提到了CAS,接下来一段提到 “Researchers knew the panda reached its maximum size about 500,000 years ago, when it peaked ...”可知熊猫的体型最大的时候也是数量达到顶峰的时候是在500,000 年以前。故答案为C。
【重庆合川区2017高考英语阅读理解九月指导题:4(含解析)】相关文章:
★ 山东省济宁市2016年高考英语复习:条件状语从句(含解析)
★ 常熟市2014高考英阅读理解语一轮(暑假)训练题(2)及答案
★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练:第13组(含解析)
★ 2017高考四川省广安市英语阅读理解一轮系列训练:17(含解析)
★ 2017届高考英语二轮复习大题冲关秘籍语法填空:名校模拟(含解析)
★ 重庆市2014高考英语阅读理解一轮(精品)训练题(20)附答案
★ 【课堂新坐标】2017届高考英语(通用版)二轮复习书面表达专题训练:Ⅱ卷强化增分练 训练4(含解析)
★ 2017届高考英语二轮复习大题冲关秘籍完形填空之记叙文:创新押题(含解析)
★ 重庆市2014高考英语阅读理解一轮(精品)训练题(3)附答案
★ 2017高考四川省广安市英语阅读理解一轮系列训练:16(含解析)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21