In the field of L2 （second language） reading, scholars generally agree that ER （extensive reading） improves L2 learners＇ reading speed and comprehension and enriches their L2 vocabulary （Grabe ＆ Stoller, 1997）...In the field of L2 （second language） reading, scholars generally agree that ER （extensive reading） improves L2 learners＇ reading speed and comprehension and enriches their L2 vocabulary （Grabe ＆ Stoller, 1997）. This teacher-inquiry type of paper presents a practical suggestion for supplementing ER activity with the element of CL （cooperative learning）. ER, theoretically speaking, focuses on the solitary task of silent reading. The CL technique used in this study was a book-talk activity. Forty-five freshmen from a course of children and young adult literatures were required to read at least 20 English books throughout a semester. CL was added to facilitate students＇ ER in young adult literature. After a semester, short-answer questions were asked regarding students＇ comments on ER as well as CL. Students overall agreed that when ER is supplemented with CL, reading in an L2 seems to be less intimidating.展开更多
The depletion potential between two colloid particles immersed in a hydrogen bonding fluid has been investigated by density functional theory. The study is motivated by the wide applications of hydrogen bonding fluids...The depletion potential between two colloid particles immersed in a hydrogen bonding fluid has been investigated by density functional theory. The study is motivated by the wide applications of hydrogen bonding fluids in the field of colloid science, and the effects of relevant factors on the depletion potential and depletion force between colloid particles have been studied. These factors include the size ratio of the colloid particle to the fluid molecule, the bulk density of the fluid, the functionality (the number of proton acceptors a and proton donors d) and hydrogen bonding strength as well as the colloid-fluid interaction energy. By comparing the depletion potential calculated under various conditions, it is shown that the effects of these factors on the depletion potential are very significant, and in particular in regulating the depletion force and its range.展开更多
文摘In the field of L2 （second language） reading, scholars generally agree that ER （extensive reading） improves L2 learners＇ reading speed and comprehension and enriches their L2 vocabulary （Grabe ＆ Stoller, 1997）. This teacher-inquiry type of paper presents a practical suggestion for supplementing ER activity with the element of CL （cooperative learning）. ER, theoretically speaking, focuses on the solitary task of silent reading. The CL technique used in this study was a book-talk activity. Forty-five freshmen from a course of children and young adult literatures were required to read at least 20 English books throughout a semester. CL was added to facilitate students＇ ER in young adult literature. After a semester, short-answer questions were asked regarding students＇ comments on ER as well as CL. Students overall agreed that when ER is supplemented with CL, reading in an L2 seems to be less intimidating.
基金supported by the National Natural Science Foundation of China (20873035)
文摘The depletion potential between two colloid particles immersed in a hydrogen bonding fluid has been investigated by density functional theory. The study is motivated by the wide applications of hydrogen bonding fluids in the field of colloid science, and the effects of relevant factors on the depletion potential and depletion force between colloid particles have been studied. These factors include the size ratio of the colloid particle to the fluid molecule, the bulk density of the fluid, the functionality (the number of proton acceptors a and proton donors d) and hydrogen bonding strength as well as the colloid-fluid interaction energy. By comparing the depletion potential calculated under various conditions, it is shown that the effects of these factors on the depletion potential are very significant, and in particular in regulating the depletion force and its range.
