Cheongsam (also known as Qipao ), is a kind of traditional Chinese dress for women. It1from Manchu people of the Qing Dynasty(清朝) in the early 17th century.

    Once there was a young fisherwoman living near a place called Jingbo Lake. She made a living by fishing,2only problem was that when fishing she often felt bad because of her long wide clothes. Then an idea came into her3 — why not make a more comfortable dress to wear. Then she invented Qipao that helped herself fish 4.

    The5emperor(皇帝)who was in control of China at that time had a dream one night. In the dream, his dead father told him a lovely fisherwoman wearing a long dress, who lived by Jingbo lake, would 6 his wife. After that, the emperor sent some people to7that woman. At last, they found her8the place which his father told him. Then she became the emperor's wife,9her beautiful Qipao with her. Manchu women all liked Qipao and soon it became popular across China. Now it's also well-known all over the world. Not only Chinese women, but also women from foreign10such as Indonesia, are interested in wearing it.

This kind of traditional dress is made of either silk or cotton. And anyway, it becomes one of the symbols(象征) of China.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。有两个选项为多余选项。

    The Internet has opened up a whole new online world for us to meet, chat and go where we've never been before.

    But just as in face to face communication, there are some rules of behavior that should be followed when on line. ____ Imagine how you'd feel if you were in the other person's shoes.

    For anything you're about to send: ask yourself, “Would I say this to the person's face? If the answer is no, rewrite and reread. ____

    If someone in the chat room is rude to you, your instinct (本能 ) is to fire back in the same manner. But try not to do so. ____ If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect opinions of others in the chat room.

    ____ Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether it's a stupid question or an unnecessarily long answer, be kind about it. If it is a small mistake, you may not need to say anything. Having good manners yourself doesn't give you license to correct everyone else. ____ At the same time, if you find you are wrong, be sure to correct yourself and apologize to those you have offended.

由于小李经常偏食，导致他的皮肤干燥，而且还出现了牙龈出血现象，这可能是由于他体内缺乏（    ）