Which word cannot express the meaning of “地铁”？
A. metro
B. subway
C. railway
D. underground
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Which word cannot express the meaning of “由于”？
A. due to
B. depend on
C. thanks to
D. because of
Which word cannot express the meaning of “导致”？
A. lead to
B. result in
C. give rise to
D. in order to
GPIO（英语：General-purpose input/output），通用型之输入输出的简称。
A. 对
B. 错
STM32的GPIO输入模式有3种。
A. 对
B. 错
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