1. It is stated in the reading that World War I —-.
(A) caused a major depression in countries that were against killing civilians
(B) introduced the killing of civilians as a method of warfare
(C) is the bloodiest war in history
(D) marked the end of the most peaceful period in modern history
2. It is pointed out in the passage that —-.
(A) the war’s economic impact was felt sharply in countries that were
close to the war zone
(B) the aftermath of World War I brought more attempts to protect
civilians in war
(C) unlike all subsequent wars, World War I was worldwide
(D) the impact of the World War I was felt even by the countries which
were not close to the war fronts
3. We can understand from the passage that —-.
(A) very few countries had designed or built aircraft specifically for war
functions before World War I
(B) World War I was not the first war in which civilians died
(C) many consider World War I the defining moment of modern life
(D) the aerial bombardment of civilians was , widely criticized