1. (判断题)SCI是SCIE的简称。
2. (判断题)SCI收录的期刊中，有中文期刊。
3. (判断题)影响因子是评价一篇文章的最重要的指标。
4. (判断题)科技英语与一般英语没有什么差别。
5. (判断题)CSCD指中国科学引文数据库，创建于1989年，收录我国数学、物理、化学、天文学、地学、生物学、农林科学、医药卫生、工程技术和环境科学等领域出版的中英文科技核心期刊和优秀期刊千余种。
6. (判断题)Nature, Science, Cell 这三个期刊是三大公认的顶级科学期刊。
7. (判断题)世界著名的三大科技文献检索系统是SCI, EI, CSCD。
8. (判断题)科研人员常说的SCI，是一个期刊的名字。
9. (判断题)《科学引文索引》（Science Citation Index，SCI ）是美国科学信息研究所（ ISI）的尤金·加菲尔德（Eugene Garfield）于1957 年在美国费城创办的引文数据库。
10. (判断题)1976 年，ISI 在 SCI 基础上引出期刊引用报告（journal citation report,JCR），提供了一套统计数据，展示科学期刊被引用情况、发表论文数量以及论文的平均被引用情况。在 JCR 中可以计算出每种期刊的影响因子（Impact Factor,IF）。
11. (判断题)英语科技文献，写作时的常用时态是现在进行时。
12. (判断题)科技英语以客观陈述为主，较多使用被动句。
（判断题答案在评论区）
Cadmium is a ubiquitous environmental toxicant. The use of Caenorhabditis elegans as a model for monitoring cadmium exposure has revealed several conserved signaling pathways. However, little is known about the killing process during lethality assay. In the present study, we investigated the effects serotonergic neuronal and reproductive damages on cadmium exposure in C. elegans. We found that sterile hermaphrodites, males and worms that passed reproduction span presented high cadmium resistance compared to those of young adults. The results demonstrated that reproduction process other than reproduction capacity conferred cadmium sensitivity. Cadmium exposure resulted in high ratio bagging phenotype, which was a severe reproductive defificit with embryos hatched internally that could cause worms to die early. The mechanism of bagging formation was ascribed to cadmium-induced egg laying defificiency that led embryos to retain and hatch in uterus. The addition of serotonin and imipramine promoted egg laying and thereby increased cadmium resistance. The results demonstrated that vulval muscles responsible for egg laying were still functional, while the serotonergic hermaphrodite specifific neurons might be dysfunctional under cadmium exposure. Cadmium exposure resulted in shrinkage of serotonergic neuronal body and reduced expressions of tryptophan hydroxylase, the key enzyme for serotonin synthesis. The protection of serotonergic neuron through transient thermal preconditioning improved survival rate. In conclusion, our study demonstrated that damages of serotonergic neurons and reproduction conferred to cadmium-induced lethality. 镉是一种普遍存在的环境毒物。使用秀丽隐杆线虫作为监测镉暴露的模型揭示了几种保守的信号通路。然而，在致死性 试验中，对杀死过程知之甚少。本研究研究了镉暴露对线虫血清素能神经元和生殖损伤的影响。研究发现，不育的雌雄 同体、雄性同体和经过繁殖期的虫体均表现出较高的镉抗性。结果表明，镉敏感性是由繁殖过程而非繁殖能力决定的。 镉暴露导致了高比率套袋表型，这是一种严重的生殖缺陷，胚胎在内部孵化，可能导致蠕虫过早死亡。套袋形成的机制 被认为是由于镉诱导的产卵不足导致胚胎在子宫内保留和孵化。血清素和丙咪嗪的添加促进了产卵，从而提高了镉抗性。 结果表明，在镉暴露下，负责产卵的外阴肌肉仍有功能，而血清素能的雌雄同体特异性神经元可能功能紊乱。镉暴露导 致血清素能神经元体萎缩，并降低色氨酸羟化酶的表达，而色氨酸羟化酶是合成血清素的关键酶。瞬时热预处理对血清 素能神经元的保护提高了存活率。综上所述，我们的研究表明镉致死性与血清素能神经元和生殖细胞的损伤有关。