2020年IB生物备考攻略，试题练习（二）

　　学习IB生物的学生群体比较固定，是想要本科出国的中学生。绝大多数的学生在国际学校或者在国外高中上学，主要面临这两个问题：

　　1. 学科知识基础普遍比较差。

　　2. 语言成绩可能还不错，但是专业的学科词汇匮乏。

　　生物可以说是国际学科课程中最难的一门课。虽然划在理科范围内，但是却更像一门文科课程，有大量的东西需要记忆。但是这么大一本书，死记硬背显然是不现实的。因此我们需要尽量去理解这些知识点。

　　试题分析

　　During the industrial revolution, a major change was observed in many insect species due to the mass production and deposition of ash and soot around cities and factories. One of the most famous instances was within the spotted moth populations. An ecological survey was performed where the number of spotted moths and longtail moths were counted in 8 different urban settings over a square kilometer in 1802. A repeat experiment was performed 100 years later in 1902. The results of the experiment are shown below.

　　Which of the following statements best explains the data?

　　(A) As time passed from 1802 to 1902, the frequency of white-bodied pepper moths increased and black-bodied pepper moths decreased.

　　(B) As time passed from 1802 to 1902, the frequency of white-bodied pepper moths decreased and black-bodied pepper moths increased.

　　(C) As time passed from 1802 to 1902, the frequency of white-bodied pepper moths and black-bodied pepper moths both increased.

　　(D) As time passed from 1802 to 1902, the frequency of white-bodied pepper moths and black-bodied pepper moths both decreased.

　　题目解析

　　本题是读图题。图中黑色柱子代表1802年的蛾子数量，白色柱子是1902年的蛾子数量。

　　图表的数据表示原来的蛾子是白色为绝大多数，现在变成了黑色为绝大多数。答案选择(B) As time passed from 1802 to 1902, the frequency of white-bodied pepper moths decreased and black-bodied pepper moths increased.。　　

　　以上就是小编为大家整理的关于IB生物考点分析及试题练习，希望对大家有所帮助。更多IB考试题目、IB作文思路等问题可以咨询我们。