He has reached the following findings: first,the reasoning ability at various schooling stages turns to be in an increasing tendency;second,there exists consistency in the reasoning ability of students from all nationalities,but the ability of students from Han nationality is a little higher than that of.

Using creative thinking qustionnaire,reasoning ability questionnaire,the writer investigates the differences of creative thinking,reasoning ability shown by 504 Han,Tibetan and Mongolian undergraduates,who are randomly selected from four colleges.

The inference ability in English-Chinese translation is an inevitable requirement for translators.

A fault tree was built first according to the block diagram of system reliability,then it was mapped onto a Bayesian network to generate a conditional probability distribution table so as to assess the system reliability by inference of Bayesian network.

The writer first puts forward a point of view that the inferential ability of mathematics is integral part of mathematical ability, then makes a discussion about the inference commonly employed in the mathematics for high school students, the ability structure of mathematica.

This paper,via the discussion of how to obtain prediction and inference development by such means as making use of learnt knowledge,attempts to help the students improve their listening comprehension with the help of necessary strategies.