.

第二节：短文改错(共10小题，满分10分

I was walking home from school while suddenly                    86. ______________

it rained heavy. What should I do? I didn’t have an                  87. ______________

umbrella and a raincoat with me. I looked around and                88. ______________

see some students walking happily under their umbrellas.             89. ______________

They must listened to the weather forecast. I began to                90. ______________

run and caught in the rain. I kept running until                      91. ______________

I got to a bookstore which I could wait until the rain                 92. ______________

stopped and in the same time I could read my                      93. ______________

favorite books. After about half a hour,                           94. ______________

the rain stopped and I went home.                               95.______________

热交换器在长期检修或阀门不严的情况下怎样处置？