[单项选择]

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 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. Ceils in your brain called neurons are responsible for this processing.
The fMRI (functional Magnetic Resonance Imaging) 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, scientists can
A. A small region of the brain.
B. The central part of the brain.
C. Neurons in the brain.
D. Oxygen rich blood.

[单项选择]

A team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning 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. Ceils in your brain called neurons are responsible for this processing.
The fMRI (functional Magnetic Resonance Imaging) 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, scientists can
A. Cells in your brain are called neurons.
B. The more oxygen a neuron consumes, the more blood it needs.
C. fMRI helps scientists to discover which parts of the brain process information.
D. fMRI helps scientists to discover how the brain develops intelligently.

[单项选择]
A team of researchers in California has developed a way to predict what kinds of objects people are looking at by scanning 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 are responsible for this processing.
The fMRI (functional Magnetic Resonance Imaging) 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, scientists can visualize which parts of the
A. A small region of the brain.
B. The central part of the brain.
C. Neurons in the brain.
D. Oxygen-rich blood

[单项选择]A team of international researchers has found new evidence that an endangered subspecies of chimpanzee is the source of the virus that causes acquired immune deficiency syndrome (AIDS) in humans. Experts said the finding could lead to new treatments for AIDS and contribute to the development of a vaccine against the disease.
The research team said the chimp -- a subspecies known as Pan troglodytes native to west central Africa carries a simian immunodeficiency virus (SIV) that is closely related to three strains of human immunodeficiency virus (HIV), the virus that causes AIDS. One of these strains, HIV-1, has caused the vast majority of the estimated 30 million HIV infections around the world.
The researchers are uncertain when the chimp virus, called SIVcpz (for simian immunodeficiency virus chimpanzee), first infected humans, although the oldest documented case of HIV has been linked to a Bantu man who died in Central Africa in 1959. But they said the virus, which does no
A. people now know the number of chimpanzees is much smaller than expected.
B. it may make it possible for scientists to discover new ways of treating AIDS.
C. it proves some deadly human diseases can also be transmitted to wild animals.
D. it will soon help the scientists develop a vaccine that prevents the AIDS virus.