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【单选题】
Computers, and especially connecting to the Internet, provide unique opportunities to enhance science and math education. Take, for example, the project called Chickscope, a program that would only be possible with the Internet. Which came first, the chicken or the egg? In schools across the country, many teachers use the egg as a springboard to a demonstration of how life begins and develops, setting up an incubator to hatch chicks in the classroom. Fascinated kids watch as a chick pecks its way through the shell and finally struggles out. But what if the kids could see inside the egg and observe the changes in the chick embryo during its three weeks of growth. gathering egg-related data along the way? Chickscope, an interdisciplinary program based at the University of Illinois at Urbane-Champaign, permits just that. Kids see inside the egg courtesy of magnetic resonance imaging (MRI) technology. Without leaving their classrooms, East Central Illinois high school students and teachers can access and operate an MRI system via the World Wide Web, and watch as the chick embryo matures. 'They actually run the MRI system, collect data, and run experiments,' says Clint Potter, Chickscope project leader and a researcher at the university's Beckman Institute for Advanced Science and Technology. A key side benefit: Students not only learn about the subject at hand, they feel as though they are part of 'a community of learners.' as one teacher put it. This community concept is key to many of the prevailing theories about how best to learn science. Kids tend to learn faster and more deeply when the learning experience is shared. And that's what makes the Internet, with its built-in ability to promote interaction, so powerful. Students can use the Net as a tool to construct solutions to problems, learning from one another in the process by doing, not by rote instruction. And community learning can benefit the community. In an environmental science class at Covington High School in Covington, Louisiana, for example, students used the Internet to focus on cleaning up a local polluted stream by researching water-quality improvement techniques. With the help of a computer, they put together multimedia presentations for local and state political leaders. The Army Corps of Engineers awarded the city a grant to proceed with cleanup in large part because of the students' work, which the Corps said was the equivalent of $ 50,000 of research and preparation time. Because the Internet is not limited in time and space, it can transport kids to realms that are intrinsically more exciting than their own classrooms. Thousands of elementary school students connected by the Internet are joining biologist David Anderson in collecting satellite data that tracks the marathon flights of two species of albatross that nest on Tern Island in Hawaii. The Albatross Project, which is sponsored by the National Science Foundation, seeks to learn how the availability of food affects the large seabirds' extremely slow reproduction. But it has another purpose, sparking children's interest in science by involving them in actual research. The project seemed the perfect opportunity to engage school-age kids in science, says Anderson. According to the passage, which of the following should be encouraged to enhance learning of math and science? Problem solving. Actual research. Repetitive in-class drills. Group work. Rote learning.
A.
1 and 3.
B.
1, 2 and 4.
C.
4 and 5.
D.
2, 3 and 5.
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【单选题】There is evidence that man is changing______.
A.
man has been growing taller over the past 500 years
B.
man has got stronger eyes than he ever had
C.
man's hair is getting thinner and thinner
D.
man's limbs are getting weaker because he tends to make less use of them
【单选题】古人所谓的“鞠躬尽瘁,死而后已”,就是要求从业者在职业活动中做到( )。A.忠诚B.审慎##
A.
古人所谓的“鞠躬尽瘁,死而后已”,就是要求从业者在职业活动中做到( )。 A.忠诚
B.
审慎
C.
勤勉
D.
民主
【判断题】C++中,一个函数必须在函数声明后才能使用。()
A.
正确
B.
错误
【判断题】陈寅恪先生主张用经学的方法研究史学。()
A.
正确
B.
错误
【单选题】在火灾初期有阴燃阶段,产生大量的烟和少量的热,很少或没有火焰辐射的场所,常选用( )火灾探测器。
A.
感温
B.
感烟
C.
感光
D.
图像式
【单选题】当楼板的长边与短边之比( )时,荷载沿双向传递,称为双向板。
A.
>2
B.
≤ 2
C.
>1
D.
≤ 1
【简答题】当楼板的长边与短边之比( )时,荷载沿双向传递,称为双向板A.>2B. ≤2C.>1D.≤1
【多选题】和平与发展已经成为时代主题,但霸权主义、新干涉主义、恐怖主义等仍在威胁世界和平,国际金融危机、粮食安全、能源安全等全球问题也变得更加突出,这说明当前和今后一个时期国际局势发展的基本态势是( )
A.
总体合作、局部对抗
B.
总体和平、局部战争
C.
总体缓和、局部紧张
D.
总体稳定、局部动荡
【单选题】万有引力势能和两质点距离的关系为()。
A.
成反比
B.
无关
C.
和距离平方成反比,为负值
D.
和距离平方成反比
【单选题】万有引力势能和两质点距离的关系为()。
A.
成反比
B.
无关
C.
和距离平方乘反比,为负值
D.
和距离平方成反比
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