第3题: [单项选择]This passage most probably is ______. A. a book review B. the preface of a book C. the post script of a book D. the conc4uding part of a book 参考答案:B 答案解析:这篇短文很可能是该书的前言。第二段首的This book is written for…指明该书的读者对象；第三段首句和第四首句说明了该书要达到的两个目的。据此，我们可以断言：这是一本书的前言。
第4题: [单项选择]下列为含有B族维生素的辅酶，例外的是（） A. 磷酸吡哆醛 B. 辅酶A C. 细胞色素B D. 四氢叶酸 E. 硫胺素焦磷酸 参考答案:C
第36题:[单选题]下列的查询语句哪一项是错误的（选一项） A.Select * from stumarks where score>=60 B.Select * from (select * from stumarks where score>=60) C.Select * from (select * from stumarks where score>=60) as temp D.Select * from (select * from stumarks ) as temp where score>=60 参考答案:B
