单项选择题
A.Remove any add-ons that are not found in the list of downloaded ActiveX controls.
B.Remove any add-ons that are not found in the list of add-ons used by Windows Internet Explorer 7.
C.Remove any add-ons that are not found in the list of add-ons that run without requiring permission.
D.Remove any add-ons that are not found in the list of add-ons that are at present loaded in Windows Internet Explorer 7.
单项选择题 You share your computer with other users. You install a new Microsoft Windows Internet Explorer add-on to view videos on the computer. You discover that this add-on conflicts with existing add-ons that other users frequently require. You need to ensure that you are able to view videos without affecting other users. What should you do？（）
单项选择题 You need to reduce the level of access that a malicious Web site might have to your computer. What should you do？ （）
多项选择题 The pop-up blocker is enabled on your computer. A Web site that you visit regularly uses pop-ups. You need to view the pop-ups from this Web site while maintaining the highest level of security for all other Web sites. What are two possible ways to achieve this goal？（）