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【单选题】
( )主要由敏感元件和转换元件组成。A.
传感器
B.
RFID
C.
二维码
D.
条形码
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举一反三
【单选题】Why is it important to realize and handle stress in a positive way when it occurs?
A.
It will inevitably increase your blood pressure.
B.
It may cause physical problems if it is prolonged.
C.
It is so harmful as to cause distress.
D.
It is particularly frustrating.
【简答题】Why is it important to have breakfast?
【简答题】雅丹地貌以罗布泊、甘肃敦煌月牙泉一鸣沙山、乌尔禾风城等最为典型。（ ）
【单选题】Why is it important to know the entire process before the trip?
A.
It makes sure you have a unexpected trip.
B.
It makes sure you have an exciting trip.
C.
It makes sure you have a pleasant and safe trip.
【简答题】雅丹地貌以罗布泊、甘肃敦煌月牙泉一鸣沙山、乌尔禾风城等最为典型。( )
【单选题】According to Landau, why is it important for a president to have a dog?
A.
It increases his chances of being reelected.
B.
It humanizes the president, making him easier to relate to.
C.
It shows that the president can care for an animal．
D.
It is the tradition of White House as a president．
【简答题】Why is it important?
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