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[单选题]直线导轨系统包括两部分:( )是固定元件,( )是工作部件。
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To spend too much time in _______ is _______, to use them too much for ornament is ______, to make ________ wholly by their rules is the ______ of a scholar.
The real attractions of the Hollowell farm, to me, were: its complete _______, being about two miles from the _______, half a mile from the nearest ________, and separated from the _________ by a broad ______.
“An abode without _____ is like a meat without _______.” Such was not my abode, for I found myself suddenly _______ to the birds; not by having ________ one, but by having caged _______ near them.
Francis Bacon was the writer of "Of Studies".
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