Many people believe that hunger is only a problem in the developing countries.________,it is a problem all over the world.
32.No ready technical data was ______________,but we managed to go without.
31.Every solid object______reflect a sound,varying according to the size and nature of the object.
30.Are you certain that this is _________in his speech?
29.— How do you Chinese celebrate Mid-Autumn Day? — Well,it depends.For me,I usually sit in the yard,________the full moon with my family.
28.Although the false banknotes fooled many people,they did not____close examination.