Questions 1-2 are based on the following passage.
A Necessary Resource for Science
In the winter of 1968, scientists David Schindler and
Gregg Brunskill poured nitrates and phosphates into Lake ① 227,
this is one of the 58 freshwater bodies that compose Canada’s remotely located Experimental Lakes Area.
Schindler and Brunskill were contaminating the water not out of malice but in the name of research.
While deliberately adding chemical compounds to a lake may seem ②destructive and irresponsible,
this method of experimenting is sometimes the most effective way
to influence policy and save the environment from even more damaging pollution.
1.
A) NO CHANGE
B) 227. Which is one
C) 227. One
D) 227, one
2.
A) NO CHANGE
B) destructive, and irresponsible this method
C) destructive and, irresponsible, this method
D) destructive and irresponsible this method,