无论是托福写作还是口语，句子的积累必不可少，掌握句子的意义和用法，可以让你的写作和口语提升一个档次，下面就和小编一起学习下吧！
11.Acids are chemical compounds that,in water solution,have a sharp taste， a corrosive action on metals,and the ability to turn certain blue vegetable dyes red.
12.Billie Holiday's reputation as a great jazz-blues singer rests on her ability to give emotional depth to her songs.
13.Essentially，a theory is an abstract，symbolic representation of what is conceived to be reality.
14.Long before children are able to speak or understand a language，they communicate through facial expressions and by making noises.
15.Thanks to modern irrigation，crops now grow abundantly in areas where once nothing but cacti and sagebrush could live.
16.The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them.
17.Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others.
18.Fungi are important in the process of decay，which returns ingredients to the soil，enhances soil fertility， and decomposes animal debris.
19.When it is struck，a tuning fork produces an almost pure tone，retaining its pitch over a long period of time.
20.Although pecans are most plentiful in the southeastern part of the United States，they are found as far north as Ohio and Illinois.
以上为大家总结的内容希望对大家的托福备考有帮助，大家平时备考时也可以积累一些这样的内容，或许你在考试的时候就可直接拿来用哦。最后，小编预祝大家托福考试能取得理想的成绩。
AEIS在线试听课程
