If you play on a mobile phone     1     you are waiting for a bus in Shenzhen, it’s likely that you will miss all the quiet electric buses in the city. Shenzhen replaced over 16, 000 buses with electric ones in 2017 and     2    (make) all of its taxis electric ones the next year.

The change from     3    (noise) diesel (柴油) buses to quiet electric buses     4    (call) a silent revolution. “With diesel buses, I can remember     5    (stand) at the bus stop and the heat and emissions made me     6    (extreme) uncomfortable in the summer,” said Joseph Ma, general     7    (manage) at Smenzhen Bus Group. “The electric buses have made     8     huge difference.” With the change, it is reported that Shenzhen Bus Group could save 160, 000 tons     9     coal per year and reduce CO2 emissions by 440,00 tons every year.

In fact, some foreign     10    (city) are also trying to move to electric buses. For example, New York has planned to make all its buses electric by 2040.