1 . Over the years, the system developed into different forms, as it was a time when people were divided geographically, leading to many v__________ of dialects and characters. (根据首字母单词拼写)

2 . R__________ workers are those who try to save people from dangerous or difficult situations, especially after an accident or a disaster. (根据首字母单词拼写)

5 . A little knowledge and a few measures can enormously increase your chances of s __________ an earthquake. (根据首字母单词拼写)

6 . As is said in the job advertisement, you must fill in the a__________ form online and submit it by Friday. (根据首字母单词拼写)

7 . Air pollution is a g__________ problem and all countries should work together to deal with it. (根据首字母单词拼写)

8 . A 7.8-magnitude earthquake s__________ Tangshan on 28 July 1976. (根据首字母单词拼写)

9 . D__________ the bad weather, they had a pleasant journey. (根据首字母单词拼写)

10 . The building was completely d_________ by fire. （根据首字母单词拼写）