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问题 单项选择题

预防感冒的主要措施有（）①加强体育锻炼，增强抗病能力②注意天气变化，适时增减衣服③通风换气、勤晒被褥④出汗后不要迎风摘帽和脱衣

A、①②③

B、②③④

C、①②③④

答案

参考答案：C

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Only Mother Love is true love. It gives everybody everything all 56._________ life. When you are still a baby, Mother takes good care of you as possible. In your walking hours she always holds you in her arms. When you are 57.________, she stops her work right now to look after you day and night and 58._________ about herself. When you are growing up day by day, she feels very happy. When you are 59.__________ enough go to school, Mother still looks after you all the time. On cold winter days, she always 60.________ you to put on more clothes. She always stands in the wind 61._________ for you back from school. When you hurry to leave home for school with little breakfast, she always feels 62.________ about you at home. She usually knows about your 63.__________ and spends much money on your school things. When you do well at school, you will see the brightest smile on her face.

Mother is 64.__________ ready to give everything she has to her children, not to receive. What true love that is in the 65.__________! We will remember Mother Love for ever!
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填空题

钻进中发现泵压下降（）时，应检查地面设备和钻井液性能。
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