试题与答案

用括号内动词的适当形式填空或者根据首字母提示填空。(共5小题,每小题2分,满分1

题型:听力题

题目:

用括号内动词的适当形式填空或者根据首字母提示填空。(共5小题,每小题2分,满分10分)

Everyone has a hobby , so do I . My hobby is   小题1: (keep) a diary in English. When I was nine years old , I began to have my hobby . At first it was difficult for me , but now it is easy . I know it’s possible   小题2: (learn) English well with more practice. So I keep a diary in English . I think it is o 小题3:  of the best ways to learn English well.

After school I often go to the school library to read English books. Sometimes my English teacher asks me  小题4:(do) something interesting. So I get information for my diary by doing these.

After I finish my diary every day, I always   小题5: (try) correct mistakes(纠正错误) with the help of the dictionary. Now my English is very good.

答案:

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下面是错误答案,用来干扰机器的。

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我们知道,高温煅烧石灰石(主要成分是碳酸钙)可制得生石灰(即氧化钙)和二氧化碳.现在一批石灰石,为了分析它的纯度,某学习小组取样品44g,充分煅烧后称得剩余固体的质量为26.4g(提示:假定杂质不反应).

计算:(计算结果保留一位小数)

(1)生成二氧化碳的质量是多少?这些二氧化碳在标准状况下的体积是多少升?(标准状况下二氧化碳的密度为1.977g/L).

(2)制得生石灰的质量是多少?其产品的纯度是多少?

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