小题1:Yes.
小题2:22 April
小题3:over 150 countries
小题4:Turn Off The Tap
小题5:Turn off lights when you leave a room./
Turn off your computer every night.
小题1:细节理解题，根据文中语句“The first Earth Day was in 1970.”理解可知。
小题2:细节理解题，根据文中语句“In the week around Earth Day (22 April) there were many thousands of smaller, local events.”理解可知。
小题3:细节理解题，根据文中语句“In 2007 organizers in over 150 countries planned over 4,000 big events.”理解可知。
小题4:细节理解题，根据文中语句“Don’t leave the tap running.”理解可知。
小题5:细节理解题，根据文中最后的语句理解可知。