剑桥雅思听力真题练习

　　在雅思听力备考中，考生应该重点练习一下剑桥雅思听力真题，希望各位考生能结合有效的真题练习，帮助我们攻克雅思听力的难关，接下来是小编为大家准备的剑桥雅思听力真题中的一部分，一起来看看吧!
　　剑桥雅思13Test3雅思听力Section3真题如下：
　　SECTION 3 Questions 21-30
　　Questions 21-24
　　Choose the correct letter, A, B or C.
　　Project on using natural dyes to colour fabrics
　　21.What first inspired Jim to choose this project?
　　A textiles displayed in an exhibition B a book about a botanic garden C carpets he saw on holiday
　　22.Jim eventually decided to do a practical investigation which involved
　　A using a range of dyes with different fibres. B applying different dyes to one type of fibre. C testing one dye and a range of fibres.

　　23.When doing his experiments, Jim was surprised by
　　A how much natural material was needed to make the dye. B the fact that dyes were widely available on the internet C the time that he had to leave the fabric in the dye.
　　24.What problem did Jim have with using tartrazine as a fabric dye?
　　A It caused a slight allergic reaction. B It was not a permanent dye on cotton. C It was ineffective when used on nylon.