extraordinary" in paragraph 5 is OPPOSITE in meaning to ______.,,,,==Regular|Rare|Exceptional|Impressive">

like wires in a giant telephone exchange" in paragraph 1 could be best replaced by ______.,,,,Similar to a massive network of computers|Like lines in a huge power grid|Resembling connections in a grand circuit board|==Like cables in a massive communication center">

them" in paragraph 1 refers to ______.,,,,Brain functions|Signals|==Neurons|Neurotransmitters">

appalling" in paragraph 4 is OPPOSITE in meaning to _____.,,,,shocking|==acceptable|alarming|surprising">

come across" in paragraph 1 could best be replaced by ______.,,,,==found unexpectedly|thought about|struggled with|looked for">

,,,,(I)|(II)|(III)|==(IV)">

yelled" in paragraph 4 is OPPOSITE in meaning to ______.,,,,==whispered|shouted|spoke|cried">

it" in paragraph 3 refers to ______.,,,,==mobile|pocket|arm|hill">

,,,,[I]|==[II]|[III]|[IV]">