题目内容：
Questionsare based on the passage you have just heard．
参考答案：
答案解析：
单选题：Questionsare based on the passage you have just heard．
- 题目分类：英语六级
- 题目类型：单选题
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What is the proportion of people with breast cancer that are
What is the proportion of people with breast cancer that are inherited?
Christopher Ross’experimental results revealed that genetic
Christopher Ross’experimental results revealed that genetic testing may help____
恢复通风前，必须检查瓦斯。只有在局部通风机及其开关附近l0m以内风流中的瓦斯浓度都不超过（ ）时，方可人工开启局部通风
恢复通风前，必须检查瓦斯。只有在局部通风机及其开关附近l0m以内风流中的瓦斯浓度都不超过（ ）时，方可人工开启局部通风机。
如果锅炉发生严重满水事故时应采取（ ）的措施。
如果锅炉发生严重满水事故时应采取（ ）的措施。
Now by peering into the__________，Gross’s relatives can tell
Now by peering into the__________，Gross’s relatives can tell whether they are at