In this section, you will have 10 sentences. Read the four choices after each sentence and choose the right answer to complete the sentence.If _____ is burnt, it will give off poisonous gases.
A、plastic
B、paper
C、wood
D、cotton
全新版大学进阶英语：视听说教程第二册

章节列表

Unit 1 Education30Unit 2 Water34The Big Picture 13Review 12Unit 3 Food30Unit 4 Festivals52The Big Picture 21Review 22Unit 5 Cities32Unit 6 Jobs43The Big Picture 33Review 32Unit 7 Music36Unit 8 Journeys44The Big Picture 43Review 42Practice Test One19Practice Test Two25