223- The passage is mainly about ............... . A) the benefits of insects, contrary to the negative assumptions about them
B) the methods to get rid of pests in farming
C) the importance of insects in food production
D) a new type of insect employed in genetics
E) the relationship between insects and physiological processes
224- All the following benefits of insects are referred to by the author except the fact that they ............... . A) help to eradicate harmful insects
B) are eaten by other insects
C) are used in hormonal experiments
D) eat the remains of plants and animals
E) are believed to have curative powers
