第30题: [单项选择]公文中的祈使命常常依靠( )。 A. 语气词表达 B. 惯用的句式表达 C. 感叹词表达 D. 无主句表达 参考答案:B
第31题: [填空题]These envelops are so small that letters have to be _____ several times they can be put inside. 参考答案:bound 答案解析:解析:
These envelops(信封) are so small that letters have to be folded(折叠起来) several (几)times (次)before