The word "disputes" is closest in meaning to which of following?
(A) discussions
(B) arguments
(C) developments
(D) purchases
152. This had a considerable effect on cattle ranching, since the herds no longer had unrestricted use of the plains for grazing, and the fencing led to conflict between the farmers and the cattle ranchers.
The word "unrestricted" is closest in meaning to which of following?
(A) unsatisfactory
(B) difficult
(C) considerable
(D) unlimited
153. The steel wires used are galvanized-coated with zinc to make them rustproof. The two wires that make up the line wire or cable are fed separately into a machine at one end. They leave it at the other end twisted together and barbed.
The word "fed" is closest in meaning to which of following?
(A) put
(B) eaten
(C) bitten
(D) nourished
154. The pressure exerted on the human body increases by 1 atmosphere for every 10 meters of depth in seawater, so that at 30 meters in seawater a diver is exposed to a pressure of about 4 atmospheres.
The words "exposed to" in line 6 are closest in meaning to
(A) leaving behind
(B) prepared for
(C) propelled by
(D) subjected to
155. Deep dives are less dangerous if helium is substituted for nitrogen, because under these pressures helium does not exert a similar narcotic effect.
The word "exert" is closest in meaning to which of following?
(A) cause
(B) permit
(C) need
(D) change
