单项选择题

A．To examine the chemical elements in the Ice Age.
B．To look into the pattern of solar wind activity.
C．To analyze the composition of different trees.
D．To find out the origin of carbon-14 on Earth.
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单项选择题
A．They thought it quite acceptable.B．They believed it to be a luxury.C．They took it to be a trend.D．They considered it avoidable.
A．They thought it quite acceptable.
B．They believed it to be a luxury.
C．They took it to be a trend.
D．They considered it avoidable.
单项选择题
A．Lend the notes to him in an hour.B．Lend him the notes during the weekend.C．Do nothing as she doesn’t have the notes now.D．Get the notes from her friend and lend it to him.
A．Lend the notes to him in an hour.
B．Lend him the notes during the weekend.
C．Do nothing as she doesn’t have the notes now.
D．Get the notes from her friend and lend it to him.
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