He would have finished his college education, but he __________ to quit and find a job to support has family.
A. had had
B. has
C. had
D. would have
查看答案
Synonyms （同义词）of “important”
A. crucial
B. vital
C. significant
D. essential
目前中国国内图书馆常用的分类法是（）
A. 关键词法
B. 网络分类法
C. 实用分类法
D. 中国图书馆分类法
某本图书的书标是C81/F61，大类（一级）是（）
A. C
B. C8
C81
D. F61
通过图书馆可以查找电子书刊、学位论文、会议论文、专利文献、标准文献、年鉴和()等多种类型的文献资源。
A. 网易邮箱
B. 当当网
C. 科技报告
D. 心理学论坛
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