第4题:[单项选择]<BR><BR><DIV><TABLEcellSpacing=0cellPadding=0width="100%"border=0><TBODY><TR><TDvAlign=topwidth="100%"></TD></TR></TBODY></TABLE></DIV><br/>A.Before9o’clock.<br/>B.At10o’clock.<br/>C.Atabout9:15.<br/>D.After9:50.<br/>参考答案:C 答案解析:[听力原文]
M: Hello, this is Tom Davis. I have an appointment with Mrs. Jones for 9 o’clock this mornin
第21题: [单项选择]The author feels that a comparison of liquid and solid-fuel rockets shows that ______. A. neither type is very economical B. the liquid-fuel rocket is best C. each type has certain advantages D. the solid-fuel rocket is hest 参考答案:C 答案解析:文中提到一些外行可能会问,相较而言liquid and solid-fuel rockets哪个更好,作者对此问题的看法是The question is meaningless,接着在文中分别阐述了两