them" in paragraph 1 refers to ______.,,,,Brain functions|Signals|==Neurons|Neurotransmitters">
2
come across" in paragraph 1 could best be replaced by ______.,,,,==found unexpectedly|thought about|struggled with|looked for">
4
,,,,(I)|(II)|(III)|==(IV)">
6
,,,,[I]|==[II]|[III]|[IV]">
8
it" in paragraph 3 refers to ______.,,,,==mobile|pocket|arm|hill">
9
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">
10
extraordinary" in paragraph 5 is OPPOSITE in meaning to ______.,,,,==Regular|Rare|Exceptional|Impressive">
19
yelled" in paragraph 4 is OPPOSITE in meaning to ______.,,,,==whispered|shouted|spoke|cried">
25
appalling" in paragraph 4 is OPPOSITE in meaning to _____.,,,,shocking|==acceptable|alarming|surprising">
27