2017年4月15日托福阅读真题答案及解析

　　针对2017年4月15日托福阅读真题答案及解析，包括重点词汇的整理，建议考生将重点词汇都熟记下来，内容不多，但是很重要。

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　　Passage One

　　学科分类：Science

　　题目：Climate of the past

　　内容回忆：

　　1. Ice layers can provide information of the past climate, top layers are recently produced and bottom of the layers are formed for many years.

　　2. Air bubbles in the ice can yield climate information as well. By investing the gases in the bubbles, the correlation and connection of carbon dioxide and temperature are revealed.

　　3. Some sea sediments can also tell information of the climate.

　　词汇题：

　　1.Compacted=compressed together

　　2.associated =related

　　3.sensitive to =responsible for

　　4.constructed=created

　　Passage Two

　　学科分类：Biology

　　题目：Becoming Flightless

　　内容回忆：

　　1. There are two conditions of becoming flightless. First is no need to migrate to warm conditions. Second is no predators.

　　2. South America has a special bird which has no predators, this result flightless.

　　3. Flightless has advantages. Flightless birds can feed on plants due to their digestion system which is so heavy for flight birds

　　4. Flightless birds have larger eggs which can provide embryo more nutrients

　　5. Why most flightless birds didn't evolve to hands? Maybe due to their beak which can manipulate objects. However, some birds evolve to hands and paws.

　　词汇题：

　　1.Vacated= recall

　　2.Manipulate =handle

　　3.Speculate =understand

　　4.Exclusively=only

　　Passage Three

　　学科分类：Ecology

　　题目：Some qualities of a good trout stream

　　内容回忆：

　　1. Some streams have common qualities for trout ( a kind of bird)

　　2. Cool-cold water

　　3. Smooth-slowing water

　　4. Cover and shelter

　　5. Abundant insects

　　6. Areas for building nests

　　7. Conclude all the conditions for trout

　　词汇题：

　　1.robust =healthy

　　2.optimal =ideal

　　3.obstruction =阻碍

　　4.predominantly=主要的，显著的

　　以上的内容是2017年4月15日托福阅读真题答案及解析，希望给后面备考