1.The hydrogen bomb nicknamed "Bravo" was tested
a) before World War 2
b) during World War 2
c) after World War 2
2.The test is known to have caused radiation sickness in
a) 2 Japanese cities
b) 23 Japanese people
c) 264 exposed people
3.How often can people be safely exposed to radioactive fallout from a nuclear explosion?
a) once a month
b) once a year
c) never