10) Match the descriptions with the correct answer.
List some of the new innovations and weapons of World War I:
a.
: first used by the Germans in the Second Battle of Ypres; dangerous to everyone around, including those using it
b.
: first used by the Germans in the Battle of Verdun
c.
: heavily armored, used treads instead of wheels, and carried cannons and machine guns that could be fired from within the vehicle
d.
:such as biplanes and triplanes
a. Poison gas
b. Flamethrower
c. Tank
d. Aircraft