完成句子． 根据汉语意思完成英语句子，每个空格填—个单词。（5分）

小题1:在许多国家人们初次见面应该握手。

People are supposed to               when they meet for the first time in many countries.

小题2:你能告诉他尽快给我回电话吗？

Could you please tell him to      _        _to me as soon as possible?

小题3:努力学英语可以引导你找到一份好工作。

hard at English can      you to find a good job.

小题4:空难给全世界造成的影响难以想象！

The      of the air crash to all of the world can't be      .

小题5:XP系统的终结对于中国IT行业来说是一个巨大的挑战。

The "demise" of Windows XP is      as a great      by the Chinese IT companies.

计算壁瓮工程量时应该注意什么问题？