1) I've never ridden a Ferris wheel before 2) The sun had already risen yesterday by the time 3) Have you already gone to the magazine? 4) Until that moment, I had never seen ghosts. 5) Why have you not passed the test yet? 6) Yesterday when my mother came Johnny had already done the lessons and fed the cat 7) I have not been to the street yet but have already done my homework 8) I just met our teacher in the corridor 9) I have already filled out the application and referred it to my employer 10) I considered your proposal and decided to agree
2)Air pollution poses a serious health risk in many European cities. But specific solutions are within reach.
Symbolbild Gesundheit Abgase Luft (picture alliance/WILDLIFE/C.Heumader) Around 3 million deaths worldwide were linked to outdoor air pollution in 2016, according to the World Health Organization (WHO). The European Environment Agency (EEA) says air pollution is the single largest environmental health hazard in Europe, causing around 467,000 premature deaths in Europe in 2013.
The largest contributor to air pollution in European urban areas is traffic. Vehicular particulate matter poses a health risk to about 85 percent of people living in European cities, according to the EEA.
Automobiles, in particular diesel cars, are the primary source for particulate pollution. Tire particles, stirred up from the streets, also enter our lungs as we breathe.
Nitrogen oxide (NOx) emitted from cars harms our respiratory systems, and may cause asthma. Diesel cars emit NOx - on average, even new models release six times as much NOx as gasoline engines.
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