生物化石之所以能证明生物的进化,其根本原因是各类生物化石在地层中出现有一定的顺序。()
参考答案:对
根据所给的中文意思完成句子,每空一词。
小题1: 当你遇到生活中的困难时,你应该把它们视为挑战。
When you meet problems in your life, you should __________ them __________ challenges.
小题2:幸运的是,他母亲很有耐心,没有放弃帮助他。
Luckily, his mother was very __________ and didn’t __________ up helping him.
小题3:球迷们期盼着2014巴西世界杯的到来。
The football fans are _________ _________ to the coming of FIFA World Cup Brazil 2014.
小题4:吉姆今天早上上学迟到了,是因为他乘坐的公交车半路上出故障了。
Jim was late for school this morning because the bus he took ________ ________ halfway.
小题5: 图书管理员告诉我,这本书我能借一周。
The librarian told me that I could __________ this book for __________ days.
根据规范化的主题词表即一种语词型人工语言将主题概念转化为主题标识,称为()
A.分类标引
B.抽词标引
C.赋词标引
D.主题分析