单词拼写 1 . I was about to inform you of the sudden change when an ________( 意想不到的 ) visitor came. 2 . The ____________( 消失 ) of a schoolgirl was very worrying among the teachers. 3 . History is the best teacher.It ________( 忠实地 ) records the development path of each country and foretells the future to us. 4 . On the night of July 7, 1937, the Lugouqiao ________( 事变 ) raised the curtain on the Chinese People's War of Resistance against Japanese Aggression. 5 . It is that kind of courage and determination that makes Tony such a good c______ in his field. 6 . The boy was b________ in the leg by a dog this morning, which caused a quarrel between neighbours. 7 . An operation is beginning to try to save a species of crocodile from e________ . 8 . Lions and tigers are f________ animals, so when they are in zoos, they live in strong cages. 9 . As for Emma, although she lost most of her family, her story had a happy e________ . 10 . Those bad or false foods not only disturb the normal market order, but also t________ people's health or even safety.