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63 A reasons B courses C facts D factors

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21 The causes of sleep problems in older people remain unidentified.
A Right B Wrong C Not mentioned

32 It can be inferred from paragraph 5 that family ties are stronger in Portugal than in
A Greece.
B Finland.
C Spain.
D Italy.

42 The surey was focused on
A the liing conditions of older physicians in the U. S.
B the career plans of older physicians in the U. S.
C the retirement plans of older physicians in the U. S.
D the achieements of older physicians in the U. S.

A fresh B costly C attractiveD dirty