题目

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Bows (弓) and arrows (箭) are one of man's oldest weapons. They were an important discovery for people, especially hunters, giving them a weapon with they could kill their enemies or prey (猎物) from a distance. Actually, it was more than 8,000 years ago early people began hunting with bows and arrows. The short bow had limited power and short range. However, early hunters overcame these faults by learning to track (they) prey at close range. The longbow was about 2 meters length. A lot of power, about 100 pounds, was needed (pull) the string of the longbow all the way back. That is to say, anyone (use) this bow had to be strong. For a long time, the bow was just a bent stick and a string. In fact, more changes (take) place in the bow and arrow in the past twenty-five years. Today's bow is (power) and is as exact as a gun. Additionally, little (strong) is needed to draw the string. The invention of the bow ranks with the discovery of the fire and the wheel. It was great step forward for humans. 答案：【1】which【2】that【3】their【4】in【5】to pull【6】using【7】have taken【8】powerful【9】strength【10】a

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