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发布时间:2024-05-26 20:45:40

[单项选择]{{B}}第二篇{{/B}}
{{B}}Can Buildings Be Designed to Resist Terrorist Attack {{/B}}
In the aftermath of the terrorist attack on the World Trade Center, structural engineers are trying hard to solve a question that a month ago would have been completely unthinkable: Can building be designed to withstand catastrophic blasts inflicted by terrorists
Ten days after the terrorist attacks on the twin towers, structural engineers from the University at Buffalo and the Multidisciplinary Center for Earthquake Engineering Research (MCEER) headquartered at UB traveled to ground zero as part of a project funded by file National Science Foundation, visiting the site as part of an MCEER reconnaissance visit. They spent two days beginning the task of formulating ideas about how to design such structures and to search for clues on how to do so i
A. was part of the building close to the World Trade Center
B. was part of the World Trade Center
C. was shot through the window and the floor of the World Trade Center
D. damaged many buildings in the vicin!ty of the World Trade Center

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[单项选择]{{B}}第二篇{{/B}}
{{B}}Can Buildings Be Designed to Resist Terrorist Attack {{/B}}
In the aftermath of the terrorist attack on the World Trade Center, structural engineers are trying hard to solve a question that a month ago would have been completely unthinkable: Can building be designed to withstand catastrophic blasts inflicted by terrorists
Ten days after the terrorist attacks on the twin towers, structural engineers from the University at Buffalo and the Multidisciplinary Center for Earthquake Engineering Research (MCEER) headquartered at UB traveled to ground zero as part of a project funded by file National Science Foundation, visiting the site as part of an MCEER reconnaissance visit. They spent two days beginning the task of formulating ideas about how to design such structures and to search for clues on how to do so i
A. that was asked by structural engineers a month ago
B. that is too difficult for structural engineers to answer even now
C. that was never thought of before the terrorist attack
D. that terrorists are eager to find a solution to
[单项选择]第二篇    Mind-reading Machine   A team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning (扫描) what’s happening in their brains.   When you look at something, your eyes send a signal about that object to your brain. Different regions of the brain process the information your eyes send. Cells in your brain called neurons (神经元) are responsible for this processing.   The fMRI (functional Magnetic Resonance Imaging) (功能性磁振造影) brain scans could generally match electrical activity in the brain to the basic shape of a picture that someone was looking at.   Like cells anywhere else in your body, active neurons use oxygen. Blood brings oxygen to the neurons, and the more active a neuron is, the more oxygen it will consume. The more active a region of the brain, the more active its neurons, and in turn, the more blood will travel to that region. And by using fMRI, scientist
A. The magnetic system in the brain.
B. The central part of the heart.
C. Oxygen-rich blood.
D. Neurons in the brain.
[单项选择]{{B}}第二篇{{/B}}
{{B}}Electric Backpack{{/B}}
Backpacks are convenient. They can hold your books, your lunch, and a change of clothes, leaving your hands free to do other things. Someday, if you don’t mind carrying a heavy load, your backpacks might also power your MF3 player, keep your cell phone running, and maybe even light your way home.
Lawrence C. Rome and his colleagues from the University of Pennsylvania in Philadelphia and the Marine Biological Laboratory in Woods Hole, Mass., have invented a backpack that makes electricity from energy produced while its wearer walks. In military actions, search-and-rescue operations, and scientific field studies, people rely increasingly on cell phones, global positioning system (GPS) receivers, night-vision goggles, and other battery-powered devices to get aro
A. they can be very large.
B. they can hold as many things as you want to carry.
C. your hands are freed to do other things.
D. you do not have to carry things with you.

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