For the reason why optical activity of mesomer is counteracted classical answer was not convincing. By use of the helix theory and stable staggered conformation answer can be obtained.
I will not dwell on, nor mourn over, our untimely decay, nor reproach my paleface brothers with hastening it as we too may have been somewhat to blame.
Development trend of domestic third-stage multiclone is expounded as well as the problems such as single tube wearing, low capacity of single tube and the inappropriate catalyst exhaustion.
It even results in geologic hazard;for the mine geologic hazard,the background of physiognomy is the potential factor,while the irrational exploitation is the magistral factor.
If, in any circumstance, we feel that a physician's order is inappropriate or unsafe, we have a legal responsibility to question that order or refuse to carry it out.
It is responsible discretion exercised in the national interest to prevent unnecessary disclosure of eminently justifiable procedures in which untimely revelation could severely impair public confidence.
He says smoggy weather in many parts of the country is mainly caused by China's extensive development pattern and the unreasonable industrial and energy structures.
Psychologists Thomas Kern and Andrew Hill define perfectionism as " an irrational desire to achieve, along with being overly critical of one's self and others" .
人（汇总） 
件衣服
有点
。"
琴和小提琴好像
着长长的框格窗，窗户关得很严实，挡住了外面
是有发展眼光的说法。
