中国车前属（车前科）一新组合——丰都车前

将Plantago erosa Wall. var. fengdouensis Z. E. Zhao & Y. Wang提升为一独立的种，即丰都车前P. fengdouensis (Z. E. Zhao & Y. Wang) Y. Wang & Z. Y. Li。该种由于花冠无毛，花丝着生于花冠近基部，子叶在种子中与腹面（种脐面）相平行，应属于车前亚属subgen. Plantago。丰都车前P. fengdouensis以植株干后变黑和种子较大的特征接近湿生车前P. cornuti Gouan，但其叶具牙齿或羽状锐裂，具3脉，苞片三角状卵形，花冠裂片狭三角形，蒴果纺锤状椭圆球形，近中部周裂，种子腹侧具1纵槽而不同于后者。     

Methadone: six effects in search of a substance

What is the difference between heroin and methadone? Is this difference one of interpretation, where an 'opiate-like' substance is 'labelled' differently through social processes that arbitrarily describe methadone as 'legal' and 'therapeutic', and heroin as 'illegal' and 'harmful'? To study the nature of this difference, I follow two experiments in the United States and in France of methadone substitution, where medical practices attempt to replace heroin by methadone, and thereby to reduce the user's (illegal) drug use. In these trials, the experimenters ask precisely this question. The question of the nature of the difference between the substance's actions is further illustrated by the comparison between the substitution trials: when the experimenters describe methadone differently in different places and times, do they 'interpret' the drug differently, or is the drug itself different? I show that far too many elements vary from trial to trial to say that the 'interpretation' of the substance is all that varies. In order to explore the variation in detail, then, I draw on works about 'performance', and on the actor-network 'theory of action': what heroin and methadone do, but also also the very way in which they 'pass into action', is what varies in each trial. In the end, this question about difference is a question about action. In each trial, there is not from the start one substance with fixed or vague properties which one can then interpret in various manners. 'Substance' does not contain inherent actions from the start ('properties'). Rather, following the experimenters, it is possible to say that 'effects' are primary and that only at the end of the trial do the experimenters laboriously 'find substance' to effects.     

拓宽专业思维——双语教学改革新方向

文章在研究国内双语教学现状的基础上，提出了通过双语教学拓宽学生专业思维的新理念，并对双语教学改革的具体方法进行了探索和分析，是进一步发掘双语教学的潜力，改革双语教学方法的有益尝试。     

云南樟科油丹属一新种——黄连山油丹

报道了樟科油丹属一新种，即黄连山油丹Alseodaphne huanglianshanensis H. W. Li & Y. M. Shui。它产自中国云南东南部绿春县黄连山海拔840-1300 m的热带阔叶次生林中，在体态上与同一分布区内的云南油丹A. yunnanensis Kosterm.十分相似，但叶为长圆形或倒披针状长圆形(5-13×(0.8-)1.2-2.8 cm)，明显较狭，两面几无蜂窝穴，总梗及果梗无毛，密被灰白色小瘤而不同。该新种也与油丹A. hainanensis Merr. 相似，但叶长圆形至倒披针状长圆形，坚纸质，先端锐尖或渐尖，两面几无蜂窝穴，侧脉每侧7-8条，果梗长5-7 mm，密被灰白色条形的小瘤而不同。