How to use a Sherlock Metal Detector？
A. Push a button on the machine.
B. Just put it on the ground.
C. The text doesn't say.
Who writes this letter？
A. Wang Lan.
B. Lora.
C. Lora's friend.
【B10】
A. songs
B. tunes
C. jaz
What kind of thing doesn't the text mention which Lora and Wang Lan had done together？
A. Riding bikes.
B. Studying languages.
C. Going to the cinemas.
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