They're so much better to look ati'd love to be su

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C.to be looked at
主语是they ,hills and streams 只能被看
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C供参考答案2:
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选B。译为：比之钢筋水泥汽车成行和高楼大厦，山川激流要养眼得多。
比如：Dogs are great fun to play with.（狗狗宜于逗乐玩耍。）
属于定语。