MCQOPTIONS
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| 1. |
Which largest cities of the world are famous due to their persistently high level of air pollution and photochemical smog? |
| A. | Los Angeles/South Africa/Pakistan |
| B. | Mexico City/India/U.K |
| C. | Santiago in Chile/Mexico city/Los Angeles |
| D. | Santiago in Chile/Paris city/London |
| Answer» D. Santiago in Chile/Paris city/London | |