小题1:The information about the 2012 European Cup is ______ (可获得的) on these websites.

小题2:The police thought there may be more _______ (原因) of the accident, so they kept on searching for clues.

小题3:_______________ (无论如何), I won’t give up trying until the end.

小题4:Some parents don’t realize that ________ (比较) their children with others’ is not good for their own children’s growth.

起重机械和吊物不得靠近（）。必须在输电线路近旁作业时，必须按规定保持足够的（），不能满足时，应（）再进行起重作业。