公文的标题通常由作者、事由、文种三部分构成，为了文字简练，可以将文种省略。 ( )
参考答案：错
有机磷酸酯类农药中毒的机制是（）
A.促进胆碱能神经释放乙酰胆碱
B.抑制胆碱能神经释放乙酰胆碱
C.促进肾上腺素能神经释放去甲肾上腺素
D.抑制单胺氧化酶
E.抑制胆碱酯酶
Initially his book did not receive much attention, but two weeks after the critic's review appeared in the newspapers, it climbed to the best sellers' list.
A．At first
B．First of all
C．At first sight
D．From the first
