短文理解  阅读下列短文，从每题所给的A、B、C三个选项中，选出最佳选项回答问题或完成句子。

    The Lantern Festival falls on the 15^th of the first month of the lunar calendar（阴历）. This day is always the first full moon in the new year. Ancient people also called it Shangyuan Festival. Celebrations and traditions on this day began from the Han Dynasty（朝代）and became popular in the Tang Dynasty.

    Watching the red lanterns is one of the main traditions. Lanterns of different shapes and sizes are usually put on trees, or along river banks on show. It is said that sky lantern's were first used by Zhuge Kongming to ask for help when he was in trouble. Today, when the lanterns slowly rise into the air, people make wishes.

    Another tradition is guessing lantern riddles. The riddles are usually short, wise, and sometimes humorous. The answer to a riddle can be a Chinese character（汉字），a famous person's name, or a place name.

    The most important thing is to eat sweet dumplings with different tastes. In northern China, they are called yuanxiao while in southern part they're named tangyuan. Because making sweet dumplings is like a game or an activity, they are usually done happily by a group of friends or family members.

    In old times, the Lantern Festival was also romantic（浪漫的）. Watching lanterns gave young people a chance to meet each other. A line from Xin Qiji, a poet during the Song Dynasty, shows this:   

    Hundreds and thousands of times I searched for her in the crowd. Suddenly I turned, and there she stood, in the dim（昏暗的）light.

    People use their mouths for many things. In the English language, there are many expressions using the word "mouth". But some of them are not so nice.

    Sometimes, people say something to a friend or a family member. Later they regret because it hurts that person's feelings. Or they tell the person something they didn't mean to tell. The speaker might say: "I really put my foot in my mouth this time."

    Sometimes when one person is speaking, he says the same thing that his friend is going to say. When this happens, the friend might say: "You took the words right out of my mouth!" Sometimes a person has a bad or sad experience with another person. He might say that experience "left a bad taste in my mouth." Or the person possibly has a very frightening(可怕的）experience, like having an angry dog running after him. He might say: "I had my heart in my mouth."

    Some people have lots of money because they were born into a very rich family. You might say the person "was born with a silver spoon (银勺) in his mouth". He is the opposite of a person living from "hand to mouth". This person is very poor and only has enough money for the most important things in life, like food. 

    It is interesting to visit another country, but there are some problems when we don't know the1very well. It may be difficult to talk with the people there. We may not know how to use the telephone in the country we are visiting. We may not know how to buy the things we need. In a2country we might not know where to eat or what to order in a3. It is not easy to decide how4to tip waiters or taxi drivers. When we need help, we might not know how to ask for help. It is not pleasant to have an experience5that. After a short time, however, we learn what to do and what to6, We learn to enjoy life in another country, and then we may be sorry to leave.