单项选择题


Questions 19 to 22 are based on the conversation you have just heard.

A．K10-15.
B．K20-24.
C．E10-12.
D．F1-3.
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单项选择题
A．We lose a day.B．We add 24 hours.C．We gain 12 hours.D．We add an extra month.
A．We lose a day.
B．We add 24 hours.
C．We gain 12 hours.
D．We add an extra month.
单项选择题
A．Anemia.B．Shingles.C．Hepatitis.D．HIV.
A．Anemia.
B．Shingles.
C．Hepatitis.
D．HIV.
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