B The central part of the brain.

C Neurons in the brain.

D Oxygen-rich blood.

37. Which of the following statements is NOT meant by the writer?

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.

38. "Highlighting the areas of the brain at work" means

A "marking the parts of the brain that are processing information"

B "giving light to the parts of the brain that are processing information"

C "putting the parts of the brain to work"

D "stopping the parts of the brain from working"

39. What did the researchers experiment on?

A Animals, objects, and fruits.

B Two volunteers.

C fMRI machines.

D Thousands of pictures.

40. Which of the following can be the best replacement of the title?

A The Recent Development in Science and Technology.

B Your Thoughts Can Be Scanned.

C A Technological Dream.

D Device that can Help You Calculate.

第三篇 Listening Device Provides Landslide Early Warning

A device that provides early warning of a landslide by monitoring vibrations in soil is being tested by UK researchers. The device could save thousands of lives each year by warning when an area should be evacuated, the scientists say. Such natural disasters arc common in countries that experience sudden, heavy rainfall, and can also be triggered by earthquakes and even water erosion.

Landslides start when a few particles of soil or rock within a slope start to move, but the early stages can be hard to spot. Following this initial movement, "slopes can become unstable in a matter of hours or minutes," says Nell Dixon at Southborough University1, UK. He says a warning system that monitors this movement "might be enough to evacuate a block of flats or clear a road, and save lives. "

The most common way to monitor a slope for signs of an imminent landslide is to watch for changes in its shape. Surveyors can do this by measuring aside directly, or sensors sunk into boreholes or fixed above ground can be used to monitor the shape of a slope. Slopes can. however, change shape without triggering a landslide, so either method is prone to causing false alarms. Now Dixon's team has developed a device that listens for the vibrations' caused when particles begin moving within a slope.

The device takes the form of a steel pipe dropped into a borehole in a slope. The borehole is filled in with gravel around the pipe to help transmit high-frequency vibrations generated by particles within the slope. These vibrations pass up the tube and are picked up by a sensor on the surface. Software analyses the vibration signal to determine whether a landslide may be imminent.

The device is currently being tested in a 6-metre-tall artificial clay embankment in Newcastle2, UK. Early results suggest it should provide fewer false positives than existing systems. Once it has been carefully and thoroughly tested, the device could be used to create a complete early-warning system for dangerous Slopes.