41 As fires can be caused by or involve many _____ sources and fuels, fire investigators need to know not only the science of fire behavior, but also to have a working understanding of many different areas of studies, including construction, electricity, human behavior, and mechanical devices.
(A)confession
(B)ignition
(C)corruption
(D)interruption

As fires can be caused by or involve many ignition  sources and fuels, fire investigators need to know not only the science of fire behavior, but also to have a working understanding of many different areas of studies, including construction, electricity, human behavior, and mechanical devices. 

(A)confession (B)ignition (C)corruption (D)interruption 

由於火災可能由許多點火源和燃料引起，或者涉及許多點火源和燃料，所以火災調查人員不僅需要了解火灾行为学，還需要了解許多不同領域的研究，包括建築，電力，人類行為和 機械裝置。

（A）供認（B）的點火（C）腐敗（d）中斷

 involve 包含

be caused by 由…引起； 所致

As fires can be caused by or involve many _____ sources and fuels燃料；燃燒劑, 刺激因素, 爲…添加燃料, 加強；激起 fire investigators need to know not only the science of fire behavior, but also to have a working understanding of many different areas of studies, including construction, electricity, human behavior, and mechanical devices.

由於火災可能由多種點火源和燃料引起或涉及多種火災，因此火災調查人員不僅需要了解火災行為的科學知識，還需要對許多不同領域的研究有所了解，包括建築，電力，人類行為以及機械設備。

(A)confession翻譯：坦白；供認，招認；承認, 懺悔，告罪。
(B)ignition中文:點火
(C)corruption的解释是：腐败, 贪污, 堕落
(D)interruption中文:打岔