Mo Yan's books have been sold out in many bookstores ____ his winning of the Nobel Literature Prize.
A：because
B：since
C：as
D：because of
A．干冰 B．氧气 C．武德合金 D．酒精
E．石灰石 F．氢气 G．不锈钢 H．活性炭
①有芒×有芒→有芒 ②有芒×有芒→有芒215+无芒70
③有芒×无芒→有芒 ④有芒×无芒→有芒101+无芒97．
Where ________ my pencil?（ ）
指出下面句子中所使用的修辞手法。
天阴沉沉的，寒风吹到脸上像刀割一样。
