北京新航道致力于为广大考生提供托福培训以及托福考试资讯。近些年来，托福考试越演越烈，家长都希望送孩子出国深造，为了将来的发展和自身的锻炼。托福考试也几经变革，但是总也离不开听说读写几个部分。其中，词汇是基础，贯穿于始终，是一门语言的敲门砖，掌握好词汇是托福考试的步。为了地帮助考生记忆词汇，北京新航道小编为大家整理汇集了一些词汇练习题，正所谓实践出真知，希望大家在做题的过程中加强对词汇的理解和掌握。

　　349. Few insects feed their young after hatching, but some make other arrangement,provisioning their cells and nests with caterpillars and spiders that they have paralyzed with their venom and stored in a state of suspended animation so that their larvae might have a supply of fresh food when they hatch.

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

　　(A) supplying

　　(B) preparing

　　(C) building

　　(D) expanding

　　350. For animals other than mammals, then, feeding is not intrinsic to parental care. Animals add it to their reproductive strategies to give them an edge in their lifelong quest for descendants.

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

　　(A) opportunity

　　(B) advantage

　　(C) purpose

　　(D) rest

　　351. Young that are fed by their parents become nutritionally independent at a much greater fraction of their full adult size. And in the meantime those young are shielded against the vagaries of fluctuating of difficult-to-find supplies.

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

　　(A) raised

　　(B) protected

　　(C) hatched

　　(D) valued

　　352. A second, more dense atmosphere, however, gradually enveloped Earth as gasses from molten rocks within its hot interior escaped through volcanoes and steam vents.

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

　　(A) surrounded

　　(B) changed

　　(C) escaped

　　(D) characterized

　　上面是几道词汇题，大家都会了么?其实词汇掌握并不难，通过做题是的方法。在语境中体会词汇的用法才能掌握的更牢靠。祝大家取得好成绩。

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