单选题
{{I}}Question 29 and 30 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the question. Now listen to the news.{{/I}}
单选题
According to the news, the current Indian landmass was once part of ______ millions of years ago.
【正确答案】
A
【答案解析】[听力原文]29-30
Geologists say they knew that a large earthquake was coming in South Asia, but they did not know when.
The Himalayan Mountains were formed some 150 million years ago after the landmass that is now India broke off from Antarctica, drifted north and collided with the rest of Asia.
Scientists say the South Asian land mass is still moving towards North Asia at the rate of about two centimeters a year, making the area prone to earthquakes.
Harley Benz is a researcher at the U.S. Geological Survey earthquake information center. "It's a broad zone of deformation, and across this zone that extends 1,000 kilometers, you have a whole series of faults and folds."
Another earthquake-prone region is along the 1300 kilometer San Andreas Fault in California.
It is here that John Rundle, a physics and engineering professor at the University of California at Davis, is testing his earthquake computer simulation.
单选题
South Asian landmass is moving at the rate of ______ per year.