单项选择题


Questions 15-18

A． Conversation class.
B． Writing Skills class.
C． Examination Skills class.
D． All of the three courses.
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单项选择题
A． He’s been delayed.B． He’s been run clown by a bus lately.C． He seems quite tired recently.D． He’s been running less lately.
A． He’s been delayed.
B． He’s been run clown by a bus lately.
C． He seems quite tired recently.
D． He’s been running less lately.
单项选择题
A． The low humidity.B． The changing climate.C． The high altitude.D． The extreme temperatures.
A． The low humidity.
B． The changing climate.
C． The high altitude.
D． The extreme temperatures.
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