《环境噪声污染防治法》规定，在城市市区噪声敏感建筑物集中区域内，禁止夜间进行产生环境噪声污染的建筑施工作业，因特殊需要必须连续作业的，必须有县级以上人民政府或者其有关主管部门的证明。但以下夜间施工无需取得证明的是（）。

A.配合建设单位24小时联动试车

B.为避免冬期施工进行抢工

C.自来水管道爆裂进行抢修

D.全运会项目开幕时间临近必须抢工

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

In security, an (1) is a form of possible loss or harm in a computing system; examples of exposures are unauthorized disclosure of data, modification of data, or (2) of legitimate access to computing. A vulnerability is a weakness in the security system that might be exploited to cause loss or harm. A human who exploits a vulnerability perpetrates an attack on the system. Threats to computing systems are circumstances that have the potential to cause loss or harm; human attacks are examples of threats, as are natural disasters, inadvertent human errors, and internal hardware or software (3) . Finally, a control is a protective measure an action, a device, a procedure, or a technique - that reduces a vulnerability. The major (4) of computing systems are hardware, software, and data. There are four kinds of threats to the security of a computing system: interruption, interception, modification, and (5) . The four threats all exploit vulnerabilities of the assets in computing systems.

4（）

A．reason

B．assets

C．possession

D．component