托福阅读真题练习：生物多样性的文本+题目+答案
除了大量的托福词汇储备以外，大家可能最需要的就是托福阅读真题的练习。那么除了官方真题Official你还有哪些托福阅读真题进行练习呢?今日我就为大家整理了生物多样性的文本、题目以及答案，盼望可以关心到大家。
托福阅读真题练习：生物多样性的文本+题目+答案
托福阅读文本：
Biological diversity has become widely recognized as a critical conrvation issue only in the past two decades. The rapid destruction of the tropical rain forests, which are the ecosystems with the highest known species diversity on Earth, has awakened people to the importance and fragility of biological diversity. The high rate of species extinctions in the environments is jolting, but it is important to recognize the significance of biological diversity in all ecosystems. As the human population continues to expand, it will negatively affect one after another of Earths ecosystems. In terrestrial ecosystems and in fringe marine ecos
ystems (such as wetlands), the most common problem is habitat destruction. In most situations, the result is irreversible. Now humans are beginning to destroy marine ecosystems through other types of activities, such as disposal and run off of poisonous waste; in less than two centuries, by significantly reducing the variety of species on Earth, they have unraveled cons of evolution and irrevocably redirected its cour.
Certainly, there have been periods in Earths history when mass extinctions have occurred. The extinction of the dinosaurs was caud by some physical event, either climatic or cosmic. There have also been less dramatic extinctions, as when natural competition between species reached an extreme conclusion. Only .01 percent of the species that have lived on Earth have survived to the prent, and it was largely chance that determined which species survived and which died out. 地震时正确的逃生方法
However, nothing has ever equaled the magnitude and speed with which the human species is altering the physical and chemical world and demolishing the environment. In fact, there is wide agreement that it is the rate of change humans are inflicting, even mor
e than the changes themlves, that will lead to biological devastation. Life on Earth has continually been in flux as slow physical and chemical changes have occurred on Earth, but life needs time to adapt — time for migration and genetic adaptation within existing species and time for the proliferation of new genetic material and new species that may be able to survive in new environments. 宝宝多大说话正常
托福阅读题目：
1. What does the passage mainly discuss?
(A) Why people in preindustrial societies worked few hours per week
(B) Changes that have occurred in the number of hours that people work per week
(C)A comparison of the number of hours worked per year in veral industries
(D) Working conditions during the Industrial Revolution 烘焙大全
2. Compared to preiudustrial times, the number of hours in the workweek in the ninete
enth
century
(A) remained constant
(B) decread slightly
(C) decread significantly
(D) incread significantly
3. The word norm in line 5 is clost in meaning to
(A) minimum.
大爱不爱 (B) example
(C) possibility
提出的拼音 (D) standard
4. The word henceforth in line 13 is clost in meaning to
(A) in the end
excel美化
(B) for a brief period
(C) from that time on
(D) on occasion
5. The idea mentioned in line 15 refers to
(A) the 60-hour workweek
(B) the reduction in the cost of automobiles
作业最少的国家
(C) the reduction in the workweek at some automobile factories
(D) the criticism of Ford by United States Steel and Westinghou
6. What is one reason for the change in the length of the workweek for the average worker in the
United States during the 1930s?
(A) Several people sometimes shared a single job.
(B) Labor strikes in veral countries influenced labor policy in the United States.
(C) Several corporations incread the length of the workweek.
(D) The United States government instituted a 35-hour workweek.
自由近义词 7. Which of the following is mentioned as one of the purpos of the Fair Labor Standards Act of
