题目

科学家发现，海底可燃冰分布的范围约占海洋总面积的10%，其储量是煤、石油和天然气总和的两倍，是迄今为止发现的海底最具价值的矿产资源．可燃冰也称为“甲烷水合物”．“置换法”是开采可燃冰设想方案之一，即将CO2注人海底的甲烷水合物储层，CO2较甲烷更易形成水合物，因而就能将甲烷水合物中的甲烷分子“挤走”，从而将其“置换”出来（原理：CH4•nH2O+CO2═CO2•nH2O+CH4）． （1）通常情况下，CH4是一种无色、无味、难溶于水、密度比空气 听力部分(40分)(读两次) 一、听录音，选出正确答案。(8分) 1．A．subway B．supper 2．A．north B．south 3．A．tonight B．tomorrow 4．A．I want a pair of shoes． B．I want to go to the shoe store． 5．A．Where's the science museum? B．We have science class． 6． 7． 8． 二、听录音，选择最佳答语的编号填空(9分) (　　)1．A．By bike． B．By the No．11 bus． C．By the No．7 bus． (　　)2．A．Near the bookstore． B．Near the school． C．By bike． (　　)3．A．The 2nd floor． B．The 3rd floor． C．The 12th floor． (　　)4．A．Yes, there is． B．No, there isn't． C．No, it isn't． (　　)5．A．Yes, I do． B．I go to the post office． C．No, I don't． (　　)6．A．Guilin． B．Next weekend． C．By train． 三、听录音，填入句子中所缺的单词。(11分) Today it's Saturday．I'm going to ________ my grandparents ________　________．I go there ________ subway．Their home is ________　________ the Science________．I ________ left at the ________　________, then go ________．Their home is on the left． 四、听录音，选择含有相同元音音素的单词填空。(6分) My father is asking the way to the bus stop．I'm very hungry now．We are going to the East Hotel to eat something． [)]________　________　[%：]________　________　[!：]________　________ 五、看图，听录音，判断句子的正“√”误“×”。(6分)