問題詳情
Thousands of years ago, people began to recognize that there were different groups ofliving things in the world. Some animals had claws and sharp teeth and roamed on the land.Others had feathers and beaks and flew in the air. Still others had scales and fins and swamin the water. People also made observations about plants. Not only did plants vary in shape, size,and color, but some were good to eat while others were poisonous.Without knowing exactly what they were doing, people developed simple classificationsystems to group living things according to similar characteristics. In the fourth century B.C., theGreek philosopher Aristotle first proposed a system to classify life. He placed the animal into threegroups. One group included all animals that flew, another group included those that swam, and athird group included those that walked. Aristotle classified animals according to the way theymoved. Although this system was useful, it caused problems. According to Aristotle, both a bird anda bat would fall into the same flying group. Yet in some basic respects, birds and bats are verydifferent. Birds, for example, are covered with hair. Although the system devised by Aristotle wouldnot satisfy today’s taxonomists, it was the first attempt to develop a scientific and orderly systemof classification. Aristotle’s classification system was used for almost 2,000 years.In the seventeenth century, John Ray, an English biologist, based his system of classification onthe internal anatomy of plants and animals. He examined how they behaved and what they lookedlike. He was the first person to scientifically use the term species.
【題組】21. According to the passage, what did some animals have?
(A) They had claws and swam in the water.
(B) They had feathers and flew in the air.
(C) They had fins and roamed on the land.
(D) They had scales and flew in the air.
參考答案
答案：B
難度：簡單0.789474
統計：A(1),B(15),C(2),D(1),E(0)