The school bus system in the United States took its form in 1939 when Frank W. Cyr, from the New York-based Teachers College of Columbia University, organized a national standards conference for school transportation....The school bus system in the United States took its form in 1939 when Frank W. Cyr, from the New York-based Teachers College of Columbia University, organized a national standards conference for school transportation. Representatives of education and transportation depart- ments from all 48 states, together with school bus manufacturers, attended the 7-day meeting. They worked out 45 standards and rules concerning school bus safety, specifying in detail school bus length, roof height, aisle width, etc.展开更多
Links Following recent fatal accident,school bus checks kick off nationwide in China According to Xinhua news, twenty-one people, including 19 preschoolers and two adults, died and 43 others were injured when a nine-s...Links Following recent fatal accident,school bus checks kick off nationwide in China According to Xinhua news, twenty-one people, including 19 preschoolers and two adults, died and 43 others were injured when a nine-seat school bus illegally carrying 64 people collided head-on with a展开更多
Education has always been a deeply emotional topic for Chinese parents. A recent proposal calling for postponing boys＇ school starting age by one year has led to even more heated discussions on the topic.
Figs (Moracea: Ficus) and fig wasps (Hymenoptera: Chlocloids: Agaonideae) depend on each other to complete their reproduction. Monoecious fig species and their pollinating wasps are in conflict over the use of fig ov...Figs (Moracea: Ficus) and fig wasps (Hymenoptera: Chlocloids: Agaonideae) depend on each other to complete their reproduction. Monoecious fig species and their pollinating wasps are in conflict over the use of fig ovaries which can either produce one seed or one wasp. From observation on Ficus virens Ait., we showed that female flowers with outer layer of ovaries (near to the wall of syconium) had no significant difference from that with inner and interval layer of ovaries (near to the syconium cavity), in which most seeds and wasps were produced. This meant that fig tree provided the same potential resource for seed and wasps production. Observation indicated that there was usually only one foundress in syconium at female flower phase and no com- petition pollinators. Measurement of the style length of female flowers and the ovipositor of pollinators indicated that most ovaries could be reached by pollinator’s ovipositor. However, at the male flower phase, production of seeds was significantly more than that of wasps including non-pollinating wasps but there was no significant difference between seed and pollinating wasp production when without non-pollinating wasps produced. This result indicated that non-pollinating wasps competed ovaries not with seeds but with pollinating wasps for ovipositing. Bagged experiment showed that the sampling fig species was not self-sterile which was important for figs and wasps to survive bad season. Seed production in self-pollinated figs was not significantly different from total wasps in- cluding non-pollinating ones. This might be related with the weaker competition among wasps since bagged figs were not easy to reach by wasps from outside.展开更多
1. Present situation of China’s bus industry China’s bus industry has developed at a rapid speed. The annual bus output reached 264500 units in 1993, accounting for 22.4％ of the total vehicle output. Bus in use has...1. Present situation of China’s bus industry China’s bus industry has developed at a rapid speed. The annual bus output reached 264500 units in 1993, accounting for 22.4％ of the total vehicle output. Bus in use has reached 1.11 mill., making up 13.5％ of total vehicles in use. The characteristics of China’s bus industry over the past ten years are as follows:展开更多
THE year 1898 is worth remembering for China’ s women. It was that year that a large group of women who advocated social change established the Women’s Association for Progress, the Women’s School of China and star...THE year 1898 is worth remembering for China’ s women. It was that year that a large group of women who advocated social change established the Women’s Association for Progress, the Women’s School of China and started the first women’s newspaper, "Chinese Girl’s Progress" in Guishuli, Shanghai, with the support and participation of the reformers during the latter part of the Qing Dynasty. The article "On Equality展开更多
AFTER winning an award at the Third National Singers’ Contest sponsored by China Central Television in 1988, Hang Tianqi gained star status in China. Hang’s attempts at writing lyrics and composing songs is not news...AFTER winning an award at the Third National Singers’ Contest sponsored by China Central Television in 1988, Hang Tianqi gained star status in China. Hang’s attempts at writing lyrics and composing songs is not news but the September 1993 opening of the Tianqi Art School on the compound of the Air Force Political Department’s Drama Troupe has given Hang a new chance to display her talents. Today, the first art school in China to be named after a contemporary singing star has become well known across the country. Huge ad campaigns have helped to spread the word about the school, but Hang’s name did much to enhance it’s fame. Within a year, nearly 20,000 people have enrolled in the school’s correspondence courses. The students are located all展开更多
文摘The school bus system in the United States took its form in 1939 when Frank W. Cyr, from the New York-based Teachers College of Columbia University, organized a national standards conference for school transportation. Representatives of education and transportation depart- ments from all 48 states, together with school bus manufacturers, attended the 7-day meeting. They worked out 45 standards and rules concerning school bus safety, specifying in detail school bus length, roof height, aisle width, etc.
文摘Links Following recent fatal accident,school bus checks kick off nationwide in China According to Xinhua news, twenty-one people, including 19 preschoolers and two adults, died and 43 others were injured when a nine-seat school bus illegally carrying 64 people collided head-on with a
文摘Education has always been a deeply emotional topic for Chinese parents. A recent proposal calling for postponing boys＇ school starting age by one year has led to even more heated discussions on the topic.
基金Supported by the Knowledge Innovation Research Program,Chinese Academy of Sciences (KSCX2-SW-105)
文摘Figs (Moracea: Ficus) and fig wasps (Hymenoptera: Chlocloids: Agaonideae) depend on each other to complete their reproduction. Monoecious fig species and their pollinating wasps are in conflict over the use of fig ovaries which can either produce one seed or one wasp. From observation on Ficus virens Ait., we showed that female flowers with outer layer of ovaries (near to the wall of syconium) had no significant difference from that with inner and interval layer of ovaries (near to the syconium cavity), in which most seeds and wasps were produced. This meant that fig tree provided the same potential resource for seed and wasps production. Observation indicated that there was usually only one foundress in syconium at female flower phase and no com- petition pollinators. Measurement of the style length of female flowers and the ovipositor of pollinators indicated that most ovaries could be reached by pollinator’s ovipositor. However, at the male flower phase, production of seeds was significantly more than that of wasps including non-pollinating wasps but there was no significant difference between seed and pollinating wasp production when without non-pollinating wasps produced. This result indicated that non-pollinating wasps competed ovaries not with seeds but with pollinating wasps for ovipositing. Bagged experiment showed that the sampling fig species was not self-sterile which was important for figs and wasps to survive bad season. Seed production in self-pollinated figs was not significantly different from total wasps in- cluding non-pollinating ones. This might be related with the weaker competition among wasps since bagged figs were not easy to reach by wasps from outside.
文摘1. Present situation of China’s bus industry China’s bus industry has developed at a rapid speed. The annual bus output reached 264500 units in 1993, accounting for 22.4％ of the total vehicle output. Bus in use has reached 1.11 mill., making up 13.5％ of total vehicles in use. The characteristics of China’s bus industry over the past ten years are as follows:
文摘THE year 1898 is worth remembering for China’ s women. It was that year that a large group of women who advocated social change established the Women’s Association for Progress, the Women’s School of China and started the first women’s newspaper, "Chinese Girl’s Progress" in Guishuli, Shanghai, with the support and participation of the reformers during the latter part of the Qing Dynasty. The article "On Equality
文摘AFTER winning an award at the Third National Singers’ Contest sponsored by China Central Television in 1988, Hang Tianqi gained star status in China. Hang’s attempts at writing lyrics and composing songs is not news but the September 1993 opening of the Tianqi Art School on the compound of the Air Force Political Department’s Drama Troupe has given Hang a new chance to display her talents. Today, the first art school in China to be named after a contemporary singing star has become well known across the country. Huge ad campaigns have helped to spread the word about the school, but Hang’s name did much to enhance it’s fame. Within a year, nearly 20,000 people have enrolled in the school’s correspondence courses. The students are located all
