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4 Sometimes it is advisable to book hotels in advance.
A possible B profitable C easy D wise

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65 A point B picture C size D message

63
A lose
B miss
C treat
D survive

42 Sunspots are cooler than the rest of the sun' s surface because
A they produce less energy．
B they are buried in the sun．
C they are far away from magnetic fields．
D they are close to magnetic fields．

19 Oral problems in children can develop into more severe problems.
A Right
B Wrong
C Not mentioned