A.They have a great effect on everyone’’s intelligence.B.They have some effect on many people’’s intelligence.C.They have some effect on a few people’’s intelligence.D.They have no effect on most people’’s intelligence.
A.They have a great effect on everyone’’s intelligence.
B.They have some effect on many people’’s intelligence.
C.They have some effect on a few people’’s intelligence.
D.They have no effect on most people’’s intelligence.