Before starting to write effect analysis essay, one should ( ) between cause and effect.

(单选题)Doctors have to be very careful when making a ( ). (单选题)He has made a discovery ( ) of great importance to the pr (单选题)( ) more care, the flowers might have grown much better t (单选题)( ) might be expected the response to the question was ve (单选题)He raised the question of ( ) we could find the necessary (单选题)A(n) ( ) five years ago Pangkor boasted sweet-sfnglng blr (单选题)I can’t ( ) the name of the person I met yesterday. (单选题)Airline-maintenance hest practice could ( ) oil industry (单选题)Some marvelous artists ( ) the beneficial effect for peop (单选题)( ) his help, I passed this exam in the end.