第12题: [单项选择]Returning from school,() A. be found a letter in the letter-box B. a letter was found in the letter-box C. a letter was in the letter-box D. the letter-box had a letter in it 参考答案:A
第22题: [单项选择]The phrase "the process" in the last sentence of paragraph three refers to ________. A. the recrystallizing process B. the process to create a glacier C. the formation of valley glacier D. the accumulation of tae previous years snow 参考答案:B 答案解析:[解析]要正确理解此题需要通读第三段,the process 是指冰山的形成过程,A选项在第二段提到过,但与此题无关。C、D选项均是迷惑项。