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You should _______________ to one or more weekly magazines such as Time or Newsweek.

— ___________________

— Once or twice a week.

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

Whether we will go or not __________ the weather.
Which ________ do you prefer, coffee or orange juice?
喷油泵高压油管内残余压力的大小与出油阀弹簧弹力的大小有关________。
修理气门或气门座后,气门大端下陷的极限值是________。
Tables______ of stones or wood.
Without water, _________ no plants or animals.
I am wondering if they are ____ or____.
_________ in a person’s speech or writing usually ranges on a continuum from casual or colloquial to formal or polite according to the type of communicative situation.
__________ is the act performed by or resulting from saying something; it is the consequence of, or the change brought about by the utterance.
Many boys enjoy _______ football, basketball or baseball
Which do you think is ________, health or wealth?
_______________will not continue if an ongoing operation is changed or deletedA、
转K2型转向架的组成:RD2型轮对、圆锥滚子轴承、承载鞍、侧架、摇枕弹簧、减振弹簧、斜楔、摇枕、下心盘、侧架下交叉支撑装置、___________、__________。
采用双气门弹簧时,双个弹簧的旋向必须相()(同、反)。
CW—2型转向架轮对轴箱弹簧装置的组成:_____、______、______、油压减振器、轴箱弹簧。
29.__________ when you are on the bus or bike.
Which do you think is _________________important, health or wealth?
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