单词拼写 51. __________(injure) to the back are common among these workers.

单词拼写
51. __________(injure) to the back are common among these workers.
52. Only by keeping down costs will China maintain its _____________(compete) edge over other countries.
53. Alipay, _________(found) by Alibaba Group in 2004, is China’s largest online payment platform.
54. We devoted several days to _________(explore) the magnificent Maya sites.
55. Thanks for your generous help, otherwise we would ___________(suffer) great losses.
56. Written records show that acupuncture (针灸) ________(date) back to the Song Dynasty.
57. David is lively and cheerful while his sister Catherine is quiet to shyness, never speaking unless ________ (speak) to.
58. As a member of society, I am aware that being responsible is _____ it takes to make a better society.
59. Stress is a reaction, physical, mental, or emotional, _____ demands or changes in your life.
60. For her travel was an escape from the _______ (bore) of her everyday life.
【答案】51. injuries    
52. competitive    
53. founded    
54. exploring    
55. have suffered    
56. dates    57. spoken    
58. what    59. to    
60. boredom
【解析】
【51题详解】
考查名词。句意：背部受伤对这些工人来说是很正常的。injuries to the +身体部位，表示身体某处受伤，这里工人是复数且空格前面无冠词，所以injuries用复数形式。故填injuries。
【52题详解】