There has been a marked increase in industrial ____ during the past ten years.

The factory has now earned a large amount of foreign money, because there has been an increase in ___

The policy has been the cornerstone for the region to re______ its economy through tourism over the past

Data from different sources reveal that there has been a moderate increase in the earth's temperature

The town's ______ has doubled in the past ten years.

A、popular
B、popularize
C、populations
D、population