專四考試中，有語言知識一項，一共有20題，其實就是詞彙語法題啦。而且不止是語言知識，完形填空也必須用到語法。語法看似簡單，而且都是選擇題，但是也是失分點，爲了讓大家保證在這項上不失冤枉分，小編爲大家帶來專四語法每日一練，今天的量少了，但是少而精呦！
t 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
（做完後才能看答案哦！）
1.選B indispensable to do sth, indispensable for sth/ doing sth 不可缺少的',必需的
inevitable 不可避免的，必然發生的； identical同一的,identical to/with sb/sth與……完全相同的
2.選D consult with sb 與某人商量,consult查閱。
3. 選B entitle sb to sth(用於被動語態) 給某人獲得某事物或權利。
4. 選C discipline 訓練方式,處罰；confinement限制，監禁；convention大會。
5.選B substitute 代替, 替用品；revival恢復，甦醒。
