some anthropologists believe that the genetic homogeneity evident in the world's people is the result of a "population bottleneck"--at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation. (A) at some time in the past our ancestors suffered an event, greatly reducing their numbers (B) that at some time in the past our ancestors suffered an event that greatly reduced their numbers (C) that sometime in the past our ancestors suffered an event so that their numbers were greatly reduced (D) some time in the past our ancestors suffered an event from which their numbers were greatly reduced (E) some time in the past, that our ancestors suffered an event so as to reduce their numbers greatly, 先声明我们不从其他角度看,就从ving看 因为正好做到这俩个题,不一定那么典型,就先照着这俩个题说。首先第一题而言demands可能发出rob 和 make这俩个动作么,我认为显然是不能吧。但是答案是d。 然后第二题,很多人说选项a错的原因是ancestors不可能reducing,但很多人反驳,suffer之后产生的结果不就是reducing么。 然后我也一脸懵逼了,但我突然有了一种对于是否主语需要能发出v这个动作有了一个看法。 首先第一题,虽然demands无法直接rob,但是它先alter sth ,然后rob,这是合理的。而第二题,ancestor即使suffer了,ancestor也无法reduce their number。 所以我认为第二点的主语是否可以发出v这个动作应该改成主语不是字面意义上的能否发出这个动作,而是在逻辑上能否发出这个动作。 According to scientists who monitored its path, an expanding cloud of energized particles ejected from the Sun recently triggered a large storm in the magnetic field that surrounds Earth, which brightened the Northern Lights and also possibly knocking out a communications satellite.
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