Exposure to asbestos fibres can cause cancer ______. It can be inferred from the passage that the real danger comes from ______

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问题 Exposure to asbestos fibres can cause cancer ______.
It can be inferred from the passage that the real danger comes from ______.

选项 A、the asbestos dust that people take in
B、the contact of the worker’s skin with asbestos particles
C、the inferior quality of the asbestos itself
D、the excessive use of man made asbestos material

答案A

解析 事实推断题。石棉沉着病(asbestosis)是指石棉被吸进肺中沉积在内而形成肺病,因此,又被称作"石棉肺"。在使用石棉的过程中,石棉碎绒(loose fibres)进入空气中,形成石棉绒尘(dust),并被工人吸人肺中造成肺癌等疾病。研究会所提出的几个建议也首先是针对如何降低工作环境中石棉绒尘的含量,从而降低石棉的使用给建筑工人造成的危害。
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