Exercise 2.5 Insert a / an or the where necessary or leave a blank where no article is required

Exercise 2.5 Insert a / an or the where necessary or leave a blank where no article is required

(1) _____ worst nuclear accident ever to occur in (2) ____ United State took place at (3) ___ Three Mile Island nuclear reactor in (4) ___ Pennsylvania yesterday. (5) ____ causes were (6) ____ equipment failure and (7) ____ human error, leading to a loss of coolant in (8) ____ reactor and a partial meltdown of (11) ____ nuclear core could have been total. If (12) ___ coolant hadn't been lost, (13) ____ accident might not have happened.      Answer:         (1) The worst nuclear accident ever to occur in (2) the United State took place at (3) the Three Mile Island nuclear reactor in (4) Pennsylvania yesterday. (5) The causes were (6) equipment failure and (7) human error, leading to a loss of coolant in (8) the reactor and a partial meltdown of (11) the nuclear core could have been total. If (12) the coolant hadn't been lost, (13) the accident might not have happened.

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