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1.____________（将领你们去参观我们的新车间）by the secretary.
2.You __________（我们期待你能组织贸易推广活动）this time.
3.If one or more electrons are removed,__________.（我们就说这个原子带正电荷。）
4.All kinds of measures __________（防止腐蚀）.
5. __________（众所周知）natural light is actually made up of many colors.
答案与解析：
1.You will be shown our new workshop
2.are expected to organize the trade publicity campaigns
3.the atom is said/believed/thought to be positively charged
4.are taken to prevent corrosion
5.It is well known that
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