Researchers have announced that the magnetic fields emitted by one manufacturer's security surveillance system, 200,000 of which type exist worldwide, interfering with pacemakers, and this interaction can bring on missed or irregular heartbeats, nausea, breathlessness, dizziness, and even fainting.
语法 Sentence Correction-2719
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正确的用户笔记
chuster 2016-05-26 16:33:09
很长的句子中，看到主语，就要寻找谓语。 d:have announced that fields .... ,200000 of which type exist worldwide, interfering... , and this interaction can...
chuster 2016-05-26 16:50:12
正确答案是A，A用了平行结构： Researchers have announced that...and that...); 而且，A选项的主要成分是符合语法的：Researchers have announced that fields emited can interfere...and that this interaction can bring.. 至于答案D包含如下问题： First, "200,000 of which type“ seems to actually question which type these security systems are. Second, magnetic fields "interfering" with pacemakers is an incorrect verb tense. ---就是没有谓语。 Finally, choice D changes the intended meaning by implying that the machines rather than the magnetic fields are causing the problem.
BrooklynPal 2014-10-23 13:09:09
D选项中南没有谓语动词，要注意
zoewang322 2016-11-25 23:44:36
D选项缺少主语！magnetic缺少主语
huiminzi1124 2016-05-31 12:33:16
整句话没有谓语，主句主语是magneticfields
wing_able 2016-04-04 12:49:02
that后面是两个句子，用and链接。而and前面的句子没有谓语了
veravane 2015-10-20 20:26:38
无谓语
zyq2256 2015-08-16 22:53:02
and前没谓语
daoba992003 2015-06-25 00:23:07
没有谓语
Benwant700 2014-09-09 16:41:29
整句话没有谓语
