Paragraphs2and3explain________.
A、thosegoodthingsarenotwithoutsideeffects
B、whycleveradvertisingissopowerful
C、whyinmoderntimesself-medicationisstillpractised
D、whypeopledevelopfaultywaysoflife
Marytiptoedoverandtooktheclockawaybecauseshehatedtohearit___whenshewastryingtogotosleep.
A、sounding
B、ringing
C、ticking
D、humming
Thereareonlytenapplesleftinthebaskets,_____thespoiltones.
A、notcounting
B、nottocount
C、don’tcount
D、havingnotcounted
Theonlysoundsarebirdcallsandthesoftnoise________________(当水缓缓推动草时草所发出的)
Thebackgardenofourhousecontainsalawn，____verypleasanttositoninsummer.
A、whichis
B、whichitis
C、itis
D、whereitis