填空题

Is vitamin C really helpful to curing colds
No, it is ______.

【参考答案】

really unknown
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问答题
Ladies and Gentlemen,Happy New Year! This is the first new year since our company’s opening here. As I look back over the past year, I am grateful to you all for your efforts which have made it possible for the company to achieve unexpected high performance. I thank you again.I hope that this year will be an even greater year for our company and for all of us.
填空题
How can you protect other people when you have a cold______ with a tissue when you cough or sneeze at least.
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