Introductions to lectures


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4.8  CD1: 15 Listen to a recording about monitoring water levels in rivers. Complete the text with one word in each space. All the words begin with de~, re~ or e~.


Scientists are now able to monitor river levels using information from satellites by using a computer programme


by researchers at De Montfort


University in Leicester. Satellites have been able to measure the height of the sea by timing how long it takes to


a beam bounced back off


waves. But, until now, interference from objects on the banks of rivers has made it impossible to measure river levels.


However, the new programme, which is based on data collected over the last , is specially


to filter out this


interference. This new technology will be particularly useful in monitoring river levels in areas. It will, for example, enable scientists to river-level patterns over the


Amazon River basin, contributing towards our understanding of climate change.


Look at the words you have written in the spaces. Does the stress fall on the first or second syllable? How do you pronounce these words?


Listening


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