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问题 单项选择题

最易诱发冠心病患者心绞痛发作的天气是（）

A.暴雨

B.气压低

C.大风

D.寒冷

E.湿热

答案

参考答案：D

解析：寒冷、劳累、激动等可使心脏负荷增加，心肌耗氧增加，而动脉供血不能相应增加，因而诱发心绞痛。

完形填空

．课文填空：请根据模块4课文内容，在下面的空格中填上适当的单词，完成下面的两个段落，每空填写一个单词。（共10空，每空1分，共10分）

For forty years Jane Goodall has been ____11_______ about making the rest of the world understand and ______12_________ the life of these animals. She has ___13_____ that wild animals should be left in the wild and not used for _____14__________ or advertisements. She has helped to set up special places where they can live safely. She is _____15________ a busy life ….

2. Charlie Chaplin wrote, ______16_____ and produced the films he ____17    in. In 1972 he

was given a special Oscar for his ___18     work in films. He lived in England and the USA

but spent his last years in Switzerland,     19   he was buried in 1977. He is loved and

20      as a great actor who could inspire people with great confidence.
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问答题

网喷混凝土加固基坑壁施工时，对混合料的配合比有哪些要求?
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