1.First published in 1927, the charts remain an _______ source for researchers.

A intelligent B indispensable C inevitable¹ D identical

2. Please___ dictionaries when you are not sure of____ word spelling or meaning.

A search B seek C inquire D consult

3. It ____ you to at least 50% off the regular price of either frames or lenses when you buy both.

A credits B entitles C presents D tips

4. The __ at the military academy is so rigid² that students can hardly bear it.

A confinement B convention C discipline D principle

5. Doctors warned agaisnt chewing tobacco as a _____ for smoking.

A succession B substitute C revival D relief

答案

1-5BDBCB

1.选B indispensable to do sth, indispensable for sth/ doing sth 不可缺少的,必需的
inevitable 不可避免的，必然发生的
identical同一的,identical to/with sb/sth与……完全相同的

2.选D consult with sb 与某人商量,consult查阅

3. 选B entitle sb to sth(用于被动语态) 给某人获得某事物或权利

4. 选C discipline 训练方式,处罚
confinement限制，监禁
convention大会

5.选B substitute 代替, 替用品
revival恢复，苏醒