下列各组混合物中，能用分液漏斗进行分离的是 A．酒精和水

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问题选择题

下列各组混合物中，能用分液漏斗进行分离的是

A．酒精和水

B．碘和四氯化碳

C．水和四氯化碳

D．汽油和植物油

答案

答案：C

题目分析：A、酒精易溶于水，酒精和水互溶不分层，错误；B、I₂易溶于水CCl₄，不分层，错误；C、CCl₄不容于水，密度比水大，互不相溶分层，正确；D、汽油和植物油都有有机液体，互溶不分层，错误。

改错题

第三部分：写作（共两节，满分35分）

第一节：短文改错（共10小题；每小题1分，满分10分）

During the vacation, the weather was hot and I could do 56. ____________

much work, but I lived happily. On the morning I usually got up 57. ____________

early and take a walk in the garden. After breakfast, I began 58. ____________

reading English and did some exercises in maths. 59. ____________

I worked quite hardly and made good progress. I spent nearly 60. ____________

the whole afternoon outside. I went swim in the river and 61. ____________

didn’t come back when it was about five or six. Sometimes 62. ____________

a friend of me would come to see me and we would spend some 63. ___________

hours listened to music. In this way I spent my vacation happily. 64. ____________

I not only studied well and but also became a good swimmer. 65. _____________

判断题

中间汇率就是买入汇率和卖出汇率简单算术平均数。