The purpose of this study is to assess the effectiveness of using a computer-lab on oral English fluency amongst all Chinese students at Western Oregon University （WOU）. The participants are oversea Chinese graduate...The purpose of this study is to assess the effectiveness of using a computer-lab on oral English fluency amongst all Chinese students at Western Oregon University （WOU）. The participants are oversea Chinese graduate students who take undergraduate courses at WOU, and some of them regard English as their Second Language. The study adopts the experimental design, There are total of 60 Chinese students participating in the study. The results indicate that the use of a Computer-Lab significantly improved students＇ English oral expression ability.展开更多
As the number of Chinese international students studying in the U.S. has grown dramatically in recent years, there has been increasing attention to how English Composition instructors approach these students＇ writing...As the number of Chinese international students studying in the U.S. has grown dramatically in recent years, there has been increasing attention to how English Composition instructors approach these students＇ writings. Using a dialogue format representing ＂narratives of classroom life＂ （Nelson, 2011a）, this paper demonstrates two polemic views held by teachers and researchers： one view sees students＇ language use as problematic as it differs from the expected standards required for academic success in the U.S., while the other calls for more tolerance of the students＇ linguistic and cultural diversity and accordingly, more strategic ways to give ＂error feedback.＂ By opening up the debate, the paper explores possibilities for teachers in the U.S. and around the world to help their students address the gap between academic expectations, and what they are currently capable of.展开更多
Based on the new material of seven Ordovician-Silurian boundary sections investigated recently, together with previously published data, we analyze the temporal and spatial distributions of the Lungmachi black shales,...Based on the new material of seven Ordovician-Silurian boundary sections investigated recently, together with previously published data, we analyze the temporal and spatial distributions of the Lungmachi black shales, a key petroleum source bed widely distributed in South China. The Lungmachi black shales range in age from the Normalograptus persculptus Biozone of the uppermost Ordovician to the Spirograptus guerichi Biozone of the lower Telychian, and ten graptolite biozones can be recognized within this unit. The basal and upper contacts of the Lungmachi black shales are diachronous. The basal contact ranges from the N. persculptus to the C. cyphus biozones, a span of five graptolite biozones over two stages. The upper contact ranges from the D. pectinatus-M. argenteus Biozone to the Spirograptus guerichi Biozone, which spans four graptolite biozones over two stages. The Yichang Uplift resulted in the formation of the Hunan-Hubei Submarine High in the border area of Hubei, Hunan, and Chongqing. This is supported by a break in sedimentation in this area spanning all or part of the Hirnantian, and in many areas extending into the underlying Katian and overlying Rhuddanian. Comparison of the distribution of the Katian to Rhuddanian strata in this area indicates a growth and subsequent reduction in area of the Hunan-Hubei Submarine High particularly in the Hirnantian to early Rhuddanian. This may partly represent the influence of the process of formation and melting of ice sheet in Ordovician South Pole and consequent sea level change.展开更多
文摘The purpose of this study is to assess the effectiveness of using a computer-lab on oral English fluency amongst all Chinese students at Western Oregon University （WOU）. The participants are oversea Chinese graduate students who take undergraduate courses at WOU, and some of them regard English as their Second Language. The study adopts the experimental design, There are total of 60 Chinese students participating in the study. The results indicate that the use of a Computer-Lab significantly improved students＇ English oral expression ability.
文摘As the number of Chinese international students studying in the U.S. has grown dramatically in recent years, there has been increasing attention to how English Composition instructors approach these students＇ writings. Using a dialogue format representing ＂narratives of classroom life＂ （Nelson, 2011a）, this paper demonstrates two polemic views held by teachers and researchers： one view sees students＇ language use as problematic as it differs from the expected standards required for academic success in the U.S., while the other calls for more tolerance of the students＇ linguistic and cultural diversity and accordingly, more strategic ways to give ＂error feedback.＂ By opening up the debate, the paper explores possibilities for teachers in the U.S. and around the world to help their students address the gap between academic expectations, and what they are currently capable of.
基金supported by Chinese Academy of Sciences (Grant No. KZCX2-EW-111)National Natural Science Foundation of China (Grant Nos. 40839910 and 40772002)Natural Sciences and Engineering Research Council of Canada (MJM)
文摘Based on the new material of seven Ordovician-Silurian boundary sections investigated recently, together with previously published data, we analyze the temporal and spatial distributions of the Lungmachi black shales, a key petroleum source bed widely distributed in South China. The Lungmachi black shales range in age from the Normalograptus persculptus Biozone of the uppermost Ordovician to the Spirograptus guerichi Biozone of the lower Telychian, and ten graptolite biozones can be recognized within this unit. The basal and upper contacts of the Lungmachi black shales are diachronous. The basal contact ranges from the N. persculptus to the C. cyphus biozones, a span of five graptolite biozones over two stages. The upper contact ranges from the D. pectinatus-M. argenteus Biozone to the Spirograptus guerichi Biozone, which spans four graptolite biozones over two stages. The Yichang Uplift resulted in the formation of the Hunan-Hubei Submarine High in the border area of Hubei, Hunan, and Chongqing. This is supported by a break in sedimentation in this area spanning all or part of the Hirnantian, and in many areas extending into the underlying Katian and overlying Rhuddanian. Comparison of the distribution of the Katian to Rhuddanian strata in this area indicates a growth and subsequent reduction in area of the Hunan-Hubei Submarine High particularly in the Hirnantian to early Rhuddanian. This may partly represent the influence of the process of formation and melting of ice sheet in Ordovician South Pole and consequent sea level change.
