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gularly；as a result，he may not be able to pass the tests in class since he does not know the answers．Next，because of financial problems，other students may fail university classes．For example，students who have to take jobs don’t have as much time tO study；consequently，they may fail their classes．Others may give up their college study because they cannot stand the strain of working and studying at the same time．Working and studying are different things for people．Final ly，there are students who fail because their energies are not directed toward their classes． Some of these students are not interested in college，So they spend their days doing otherthings．Some other students，though enjoying college life，are distracted by other activities -parties，movies，sports，etc．So they do not study enough；therefore，they fail．Because of all these problems，numerous students fail in college every year． 参考答案： Working and studying are different things for people． Working and studying are different things for people．----------------------------------------1、1．7th-century Dutch farmers were aware of this property of carrots．2．They get their orange color from a chemical called carotene．3．If you eat tOO many carrots，your skin can turn yellow．4．Although carrots are orange now，the original carrots were purple．5．When you were a child，did your mother pack carrot sticks in your lunch?6．This condition is physically harmless，although it is visually startling．7．Housewives borrowed this trick and added carrot j uice tO the cream tO turn their butter yellow8．Yellow and orange carrots did not appear until the 16th century．9．Carrots are one of the most popular vegetables in the United States．10．They fed carrots tO their cattle to produce rich and
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