{{i}} quEstions 17—20 ArE BAsED on thE Following tExt ABout EnErgy. you now hAvE 20 sEConDs to rEAD quEstions 17—20.{{/i}}

whAt is thE mAjor sourCE oF EvAporAtion oF wAtEr From thE oCEAns AnD lAkEsA．thE moon.
B．thE sun.
C．thE stAr.
D．thE EArth.