1. ???., people today are living much longer than their ancestors.1) Despite modern medical science and technology
2) Having benefited from medical and nutritional advances
3) By living in a world full of industrial pollution
4) Because of working hard and having stressful lives
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2. This homework is optional, ?????.1) you must not do it
2) either you do it or you fail
3) you should do it now or later
4) you don´t have to do it
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3. The sex of a child is determined by parents chromosomes called sex chromosomes, X and Y. The mother always contributes an X. The father, on the other hand, may contribute either an X or a Y. ??.., the chromosomes from the mother and father form one of two patterns : an XX-a baby girl, or XY-a baby boy.1) Surprisingly then
2) Therefore, when united
3) However, if separated
4) Consequently, from time to time
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4. The Sydney Olympics was regarded as???success.1) greatly
2) A great
3) A most
4) Mostly
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5. Dear Abby : I am a high school student. I´m a pretty good boy-I get good grades, do the laundry, etc. I asked my parents if I could get my tongue pierced,??. Don´t you agree my parents are being unfair and unreasonable?1) My mother said she would never change her mind
2) They won´t consider it
3) Most of my friends didn´t get A´s
4) I just got my report card today and I got all A´s
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