题目内容

What caused severe flooding in Brazil? Torrential____.

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How many people were killed in the wildfire in South Australia? ____ (or )people at least. (空格填写数字和对应的英文单词)

When did the wildfire break out?____.

How many cases of mad cow disease have been found in Canada in less than a month?____ (or ).(空格填写数字和对应的英文单词)

坍落度是用来表示塑性混凝土哪种性质的指标( )

A. 黏聚性
B. 流动性
C. 保水性
D. 韧性

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