专四英语语法每天一练
专四考试中，有语言知识一项，一共有20题，其实就是词汇语法题啦。而且不止是语言知识，完形填空也必须用到语法。语法看似简单，而且都是选择题，但是也是失分点，为了让大家保证在这项上不失冤枉分，小编为大家带来专四语法每日一练，今天的量少了，但是少而精呦！
1.First published in 1927, the charts remain an _______ source for researchers.
A intelligent B indispensable C inevitable 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 rigid that students can hardly bear it.
A confinement B convention C discipline D principle
5. Doctors warned against chewing tobacco as a _____ for smoking.
A succession B substitute C revival D relief
（做完后才能看答案哦！）
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。
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