在托福考试中,具体的词汇题也是考察词汇的主要题型,对于考生们来说,想要更好的掌握这类题型,最主要的还是要在平时练习好,具体的历年考试中,出现的词汇真题有哪些?如何更好的练习备考?下面小编为大家整理了详细的内容,供大家参考!

  155. Deep dives are less dangerous if helium is substituted for nitrogen, because under these pressures helium does not exert a similar narcotic effect.

  The word "exert" is closest in meaning to which of following?

  (A) cause

  (B) permit

  (C) need

  (D) change

  156. As a scuba diver descends, the pressure of nitrogen in the lungs increases. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues.

  The word "diffuses" is closest in meaning to which of following?

  (A) yields

  (B) starts

  (C) surfaces

  (D) travels

  157. During ascent from a depth of 10 meters, the volume of air in the lungs will double because the air pressure at the surface is only half of what it was at 10 meters. This change in volume may cause the lungs to distend and even rupture.

  The word "rupture" is closest in meaning to which of following?

  (A) hurt

  (B) shrink

  (C) burst

  (D) stop

  158. In the twentieth century, electron microscopes have provided direct views of viruses and minuscule surface structures. The word "minuscule" is closest in meaning to which of following?

  (A) circular

  (B) dangerous

  (C) complex

  (D) tiny

  159. Unlike conventional electron microscopy, x-ray microscopy enables specimens to be kept in air and in water, which means that biological samples can be studied under conditions similar to their natural state.

  The word "enables" is closest in meaning to which of following?

  (A) constitutes

  (B) specifies

  (C) expands

  (D) allows

  160. Because of the wavelength of the x-rays used, soft x-ray microscopes will never match the highest resolution possible with electron microscopes. Rather, their special properties will make possible investigations that will complement those performed with light-and electron-based instruments.

  The word "Rather" is closest in meaning to which of following?

  (A) significantly

  (B) preferably

  (C) somewhat

  (D) instead

  以上就是关于“托福经典词汇题目440题内容整理”的内容,希望通过本篇文章的学习,对大家的考试有更好的帮助,也希望大家能够在考试中取得优异的成绩,早日实现留学梦想!更多精彩内容,敬请关注本频道的更新!


展开显示全文