1 . The a______ of the three numbers 7, 12 and 20 is 13, because the total of 7, 12 and 20 is 39, and 39 divided by 3 is 13. (根据首字母单词拼写)

2 . Increased muscle _______ help support better posture and even improve daily activities like walking upstairs or carrying heavy things. (根据句意填空)

3 . The Ming and Qing ______ (朝代) saw the appearance of the Four Famous Ink Stones—Duan Ink Stone, She Ink Stone, Tao Ink Stone and Chengni Ink Stone.(根据汉语提示单词拼写)

4 . A persuasive advertisement should get across to the customers, which means the customers’ a________ (理解，吸收) of the ad is a successful factor.(根据中英文提示单词拼写)

5 . It’s our duty to leave a better, cleaner and healthier planet for our children, so effective _________ (措施) are badly needed to maintain the ecological balance. (根据汉语提示单词拼写)

6 . Chinese c__________ is an art form in which writers and artists use specific brushes, ink, and water to write Chinese characters. (根据首字母单词拼写)

7 . The true ________ of the festival, the spirit of honesty, loyalty and patriotism, should never fade as time goes by. (根据句意填空)

8 . M____________ of information by frequent repetition (rote learning) plays a role in many education systems. （记忆）(根据中英文提示单词拼写)

9 . The rapid e________ of the university has caused a lot of problems. (the action of becoming bigger or the state of being bigger than before) (根据英文提示单词拼写)

10 . Despite ups and downs, the Chinese c ______(文明)remains powerful and prosperous(繁荣的) even today. (根据中英文提示填空)