一、选择题(每小题有一个选项符合题意) 1、下列的叙述中,不正确的是( ) A、我国是世界上最早发现和利用石油和天然气的国家之一 B、通常用石油的产量来衡量一个国家的石油化工发展水平的标志 C、我国科学家于1965年在世界上第一次用人工方法合成具有生命活力的蛋白质—结晶牛胰岛素 D、我国在人工合成具有生物活性的核糖核酸及测定其结构方面都居于世界前列 First, the multiple-choice questions (each item has an option to fit the question) 1. In the following narratives, it is incorrect () A. China is one of the first countries in the world to discover and use oil and natural gas, and usually uses petroleum. The production of a country to measure the level of development of petrochemical signs C, Chinese scientists in the world in 1965 the world’s first artificial synthesis of life-threatening protein - crystalline bovine insulin D, our country in the artificial synthesis of biologically active ribose Nucleic acid and determination of its structure are among the highest in the world