a would、should等等情态动词永远不会出现在if条件状语从句中，应该是if xxx，xxx would/ should
c only修饰紧跟在它后面的词，本选项翻译过来，ethics作为唯一的必修课被教学，明显和原句想表达的意思不符
d 1.时态错误，if条件状语从句的主句是前面未划线部分的that宾语从句，它是将来时，if应该用现在时，主将从现
2.only错误，同B
e 1.would错误，同A
2.only的移动改变了句意，ethics仅作为一个必修课被单独教学，错的类似B
AD都没有语法错误。其实这里be explained as =be，所以这里实际考了系表结构的语义平行。A项语义错在少了结果这个词语义才平行，be explained as 少一个 similarity is result of movement of people高度相似性被解释作一个人口快速（迁徙）的结果 ，这样语义才平行。
例句The growth of administrative review can be explained as a reaction to the growth of state power你简化为The growth can be a reaction 增长可能是个反应
A选项：本选项中is capable of detection应改为can be detected。be capable of和can是有区别的。can大家都知道，是“能”的意思。而be capable of是“有资格的，能够胜任的”的意思，例如：
He is capable of this work.
该例句的意思是：他能够胜任他的工作。由此可知，be capable of表达的是其主语主动上有能力做什么事情。显然地，一滴辣椒不可能主动上具有detection的能力。
B选项：本选项中的though without taste and odor没有放在a single drop附近，而是放在了动词旁边，成了插入语，因此此时其是状语，修饰be detectable。显然地，在逻辑上，without taste and odor描述的是drop而不是动词。
E.g., a variety show with performers juggling chainsaws implies that the performers juggle chainsaws IN the show. (If it's just a bunch of performers who have juggled chainsaws at some point in their career, but are doing something else in this particular show, then __ing doesn't work.)
Similarly, "a performance with the composer staging..." implies that the composer was actually staging stuff during the performance. Nonsense, that
B
"Ongoing", as used here, means "ongoing in the timeframe of whatever is described/modified".
If you were thinking "ongoing into the present", then, no.
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D选项：从句错误同(C)；平行错误同(A)。
E选项：平行错误同(A)；另外，in order to通常只能用于表示状语的不定式，不能用于表示宾补的不定式。