63. What does Paul Davies think of human existence on Mars? (A)Humans will have to bring all they need from the earth (B)Humans will find Mars totally unsuitable for living (C)Humans can produce everything they need (D)Humans can live longer in the colony on Mars

73. Why do more choices of goods give rise to anxiety? (A)Professionals find it hard to decide on s suitable product (B)People are likely to find themselves overcome by business persussion. (C)Shoppers may find themselves lost in the broad range of items. (D)Companies and advertisers are often misleading about the range of choice.

63. What does Paul Davies think of human existence on Mars?
(A)Humans will have to bring all they need from the earth
(B)Humans will find Mars totally unsuitable for living
(C)Humans can produce everything they need
(D)Humans can live longer in the colony on Mars

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