单选题：Science and technology have ___ in important ways to the imp

题目内容：

Science and technology have ___ in important ways to the improvement of agricultural production. A．attached
B．assisted
C．contributed
D．witnessed

参考答案：

答案解析：

____________ seeing the damage he had done, the child felt a

____________ seeing the damage he had done, the child felt ashameD．A．By B．On C．A

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教授《芦花荡》后，教师准备推荐以战争为题材来塑造人物形象的小说，下列合适的一项是（　　）。A．张恨水《啼笑因缘》 B．冯骥才《高女人和她的矮丈夫》 C．王蒙《活

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