Which do you prefer, oranges or apples—___. I’d like bananas.

依次填入下列各句横线处的成语，最恰当的一组是（ ）①我真不解自家的弟兄何必这样___________，岂不是横竖都一样②就是族中亲派，不论亲疏，但与他财利交往，__________，一些情面也没有的。③凌雪春从夏侯晶婴手中借过纸笔，端坐在灯下，驰笔若飞，千言长书__________。④勿因事小而不屑为，当知“万丈高楼从地起”，天下决无__________之事，亦未有一学即能之业，无不从一点一滴的知识经验积聚而成，若事小尚不能为，安见其能为大事

He spends as much time as he can______books.[ ]

He wrote a letter ___ he explained what had happened in the accident.

This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer