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‍若的一个原函数是，则等于（   ）. ​

A．
B．
C．
D．
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黑芝麻能滋润皮肤、补血通便，是养颜驻颜的保养佳品。 A. 对 B. 错

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Quality in early childhood care and education is a complicated, context-dependent issue that is not yet measured with cultural and predictive validity (that is, predicting children’s learning and development), let alone integrated effectively into monitoring, training, and support systems in many countries. (Yoshikawa and Kabay, 2014)

A．True
B．False
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