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- It is implied in the passage that



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Reading passages

222- It is implied in the passage that ............ .
A) engineers in ancient Rome didn't use their talents, for they were underpaid 
B) there were structures in ancient Rome reflecting the excellent talent of their designers 
C) Roman engineers were lucky in that their designs had already been tested earlier 
D) no dam was built in Europe till 550 AD 
E) building techniques in ancient Rome was poor 


 
 
173 
In a popular sense, "insect" usually means the familiar pests or disease carriers. 
Many insects, however, are beneficial from a human viewpoint; they pollinate plants, 
produce useful substances, control pest insects, act as scavengers, and serve as food 
for other. Furthermore, insects are valuable objects of study in elucidating many 
aspects of biology. Much of our knowledge of genetics has been gained from fruit fly 
experiments and of population biology from flour beetle studies. Insects are often 
used in investigations of hormonal action, nerve and sense organ function, and many 
other physiological processes as well. 
 
 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 

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