In old time, local officials must offer some tributes (贡物) to the emperor each year. Mian Bogao,     1    came from Yunnan, was sent to deliver a swan (天鹅) to the emperor. There was no transportation at that time and he had to walk to Chang’an. It was a long and hard time. He kept on     2    (walk) without a break whether day    3    night. A few days later, Mian Bogao was very tired and also found the swan was very    4    (dust), so he decided to help the swan take    5    bath in the river. As soon as the swan    6    (put) into the river, it beat its wings and flew away. Finally, Mian Bogao only got several feathers. He had no choice but    7    (send) these pieces of feathers to the emperor. But surprisingly, the emperor rewarded Mian Bogao instead    8    getting angry. This story can make us understand two points: First, people should be honest and trustworthy, like Mian Bogao. The swan flew away, only the swan feathers remained, and he    9    (honest) offered the swan feathers to the emperor; second, for a gift to someone else, it is the affection that matters, not the gift    10    (it).

3 . As for Benjamin Franklin’s kite-and-key experiment, most people are aware of the version in which Franklin “discovered” electricity when lightning struck his kite. However, several details about this experiment are unknown, including when and where it happened. Some historians even doubt whether it took place.

In fact, electricity had already been used for centuries before Franklin’s experiment. Franklin lived from 1706 to 1790 when electricity was understood 0S the interaction between two different fluids (流体), which Franklin later referred to as “ plus ” and “ minus ”.

It was unknown before Franklin’s experiment whether lightning was electrical, though some scientists, including Franklin, had guessed just that. Franklin was particularly interested in this because lightning strikes had caused disastrous fires where houses were made of wood. Actually, by creating a lightning rod (避雷针), Franklin helped to protect wooden buildings from being struck by lightning.

A few publications reported the experiment. In 1771 Franklin referred to the experiment in his autobiography, and other colleagues also wrote about it. Notably, the experiment appeared in “History and Present Status of Electricity” by Joseph Priestley. Priestley heard about the kite and key experiment from Franklin himself around 15 years after the fact, and in his book，he wrote it occurred in June 1752.

However, in a book by Tom Tucker, he noted Franklin’s description of his experiment was phrased in the future conditional tense: “As soon as any of the Thunder Clouds come over the Kite, the pointed Wire will draw the Electric Fire from them...” Franklin could have simply been saying that the experiment could, in theory, be performed. Given that his statement has a few missing details—Franklin didn’t list a date, time or location, for example it’s possible that Franklin did not perform the experiment himself.

However, some historians remain unconvinced that the experiment wasn’t carried out. Franklin experts, such as biographer Carl Van Doren, also point to the fact that Priestley specified the month in which Franklin performed his experiment, suggesting that Franklin must have given him precise details directly.

4 . Jiang Taigong is a popular name for Jiang Ziya, statesman and strategist(战略家). As an outstanding ______ of King Wen of the Zhou State in ______ China, at the age of 80, he helped the young King Wu ______ the Shang dynasty(商朝) and establish the Zhou dynasty.

Jiang Ziya lived near the Weishui River about 3000 years ago. The area was the feudal estate(领地) of Count(候) Ji Chang. Jiang knew Ji was very ______ so he hoped to get Ji's attention.

He often went fishing ______ the Weishui River, but he would fish in an unusual way. He ______ a straight fishhook, without bait, three feet above the water. He often said to himself, “Fish, if you don't want to live any more, come and ______ the hook yourself.”

Soon his ______ way of fishing was reported to Ji Chang. Ji sent a soldier to fetch him. Jiang saw the soldier coming, but ______ him. Jiang just went on with his fishing, and was saying to himself, “Fishing, fishing, no fish has been hooked. A shrimp(虾) is up to mischief(胡闹，捣鬼).” The soldier reported this back to Ji Chang, who became more ______ Jiang.

Ji sent an official to ______ Jiang this time. But Jiang again ignored the invitation. He just carried ______ fishing, and was saying, “Fishing , fishing , the big fish has not been hooked. A small one is up to mischief.”

Then Ji realized Jiang may be a ______ talent(人才) so he went to invite Jiang ______ and brought many generous gifts with him. Jiang saw his ______ desire so decided to work for him.

Jiang ______ Ji Chang and his son to turn over the Shang dynasty and establish the Zhou dynasty. Then Jiang was given the ______ of “Taigong” so people called him Jiang Taigong.

Later on, “There are always fish willing to be caught by angler(垂钓者) Jiang Taigong”, an idiom, appeared. Today, people use this old idiom to describe someone who is ______ to fall into a trap or does something regardless of the result. For example, if someone sells something ______ a price 10 times its real value, the buyer insisting on buying it, without caring whether it is really ______, and if it can bring him some interests(利益，好处), his situation could be described with this idiom.