the pronoun “it” actually refers to “the amount of energy used by visible equipment” because this is the only kind of energy the sentence has mentioned so far.
C：The connector “comma + and” changes the structure and the logic of the sentence, as we saw in Choice C.
The subject “the timber frame” has two verbs — incorporates and is — but these verbs are not connected by any conjunction.
that was used has four times the tensile strength steel does, and the timber frame incorporates
Option D is a popular incorrect choice. However, if we look closely, we can see this option repeats the same error we see in option A. Choice D still illogically associates the “digging” as being “almost an epic” and not “the family legend.” So, D should leave the same bad taste in your mouth as option A does.
The phrase “so as to” means “in order to.” Now, the sentence says that land graders can flatten uneven farmlands “so as not to” = in order not to waste rainwater. So, the sentence suggests that the previous models of land graders used to waste rainwater. But this advanced model can flatten uneven land not to waste water. This meaning is illogical because land graders do not waste water any which way. Land graders have got nothing to do with rainwaters. This sentence presents an illogical meaning and hence is incorrect.
“including” messes up the meaning: Reading this sentence very carefully until the end makes it clear that the use of “including” makes the sentence illogical. Once you understand this point, you can get rid of THREE answer choices straight away without analyzing them. Imagine how much time you will save if you spend some time diligently on the original sentence.
“a possible workshop” is a hoax: I mean, think about it. There can be “a ballet workshop,” “an acting workshop.” How can there be a “possible” workshop? Is “possible” a kind of workshop? It makes no sense. The sentence speaks of a site that was possibly a workshop.
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spokesman用客观事实证明not brighter去反驳resident主观性地直视灯源而下的主观性结论brighter。因此，我们要选的就是与spokesman类似的推理方法：用客观的事实反驳主观的判断！
市民觉得太亮费电，发言人，Testing with a sophisticated light meter用专业的测量过，不费电
A 医生说病人没病，用了血液检查（专业测量）
D 调查员怀疑测谎仪，用了病例的问题 （怀疑了专业仪器啊，啊啊啊啊 我看反了）