N1 Reading · Test 28

Option 1 「見つけられなかった」is the potential negative past form of 見つける (to find), meaning 'could not find.' The author began observing nature carefully to verify the TV claim that 'there are no straight lines in nature.' After examining ants, plants, and cliff rocks, the result was that they simply could not find anything that could be called a perfect straight line. This straightforward 'tried but could not find' meaning fits perfectly.

• 2「見つけられなくなった」means 'became unable to find,' implying a change of state — that the author was once able to find straight lines but then became unable to. This contradicts the context: the author never could find them; there was no prior ability that was lost.
• 3「見つけないようにした」means 'made an effort not to find / tried to avoid finding.' This contradicts the author's stated purpose of carefully observing nature to verify whether straight lines exist. The author was actively looking, not avoiding.
• 4「見つけようとしなかった」means 'did not try to find.' Again, this contradicts the passage — the author explicitly says they started observing nature more carefully precisely to confirm the claim, so they were definitely trying to find straight lines.

• 見みつける — to find, to discover
• 直線ちょくせん — straight line
• 観察かんさつ — observation

Option 2 「一方で」means 'on the other hand' and is used to present a contrasting situation that exists simultaneously. The previous paragraph established that nature has no straight lines; this paragraph shifts to the fact that artificial surroundings are full of them. 「一方で」perfectly bridges these two coexisting truths: nature lacks straight lines, while on the other hand, everyday objects abound with them.

• 1「むしろ」means 'rather' and is used to express preference or to correct a prior statement (e.g., 'not X, rather Y'). Here both statements are simultaneously true — nature has no straight lines AND artificial things do — so there is no correction or preference involved.
• 3「しかも」means 'moreover / furthermore' and adds information in the same direction. But the relationship here is contrastive (nature vs. artificial), not additive.
• 4「それどころか」means 'far from that / on the contrary' and strongly negates or overrides the preceding statement. Using it here would imply the previous claim (no straight lines in nature) is false, which is not the intended meaning — both facts coexist.

• 一方いっぽうで — on the other hand, meanwhile
• 溢あふれる — to overflow, to be full of
• むしろ — rather, instead
• しかも — moreover, furthermore
• それどころか — far from that, on the contrary

Option 4 「その時のことである」completes the cleft sentence pattern 「～を理解したのはその時のことである」= 'It was that time when I understood ~.' The sentence refers back to the period when the author observed both nature (no straight lines) and everyday objects (full of straight lines), and came to understand the clear difference between natural and artificial forms. 「のことである」is the standard expression for identifying a past event or time in a cleft construction.

• 1「その時ぐらいである」means 'it is about that time,' using ぐらい (approximately/only). This sounds like an approximate estimate of when something happened, which is too vague and unnatural for recalling a specific personal realization.
• 2「その時だからである」means 'because it was that time,' giving a causal reason. The sentence is not asking for a reason why understanding occurred; it is identifying when it occurred.
• 3「その時のためである」means 'for the purpose of that time,' expressing purpose. This makes no sense in context — there is no purpose involved in when the author understood the difference.

• 造形ぞうけい — form, shape, modeling
• 差異さい — difference, disparity
• 理解りかい — understanding, comprehension

Option 3 「こうした」means 'such / these kinds of' and refers back to the decorations and patterns just discussed in the preceding paragraph (pottery patterns inspired by nature, decorations as a fundamental human act). The sentence 「こうした最古の装飾は魔除けのために用いられたのだという」= 'It is said that such oldest decorations were used for warding off evil' smoothly connects the previous discussion to the new claim about the original purpose of decoration.

• 1「その他の」means 'other,' implying decorations different from those already discussed. But the sentence is talking about the very decorations just described, not different ones.
• 2「例の」means 'the aforementioned / the well-known' and refers to a specific item previously mentioned or known to both speaker and listener. '最古の装飾' (the oldest decorations) has not been specifically mentioned before, so 例の is inappropriate.
• 4「以下のような」means 'such as follows' and introduces examples that come after it. But the content following this sentence is a claim about purpose, not a list of examples of decorations.

• こうした — such, these kinds of
• 最古さいこ — oldest, most ancient
• 魔除まよけ — charm against evil, warding off evil
• その他の（そのたの） — other
• 例れいの — the aforementioned, the usual
• 以下いかのような — such as follows

Option 1 「持っているのだ」means 'has (it)' with the explanatory nuance of のだ, which reveals or asserts a fact. The sentence 「装飾は…役割を持っているのだ」= 'Decoration has the major role of...' states an objective fact about what decoration's true role is. This fits the context perfectly: '実のところ' (in fact/actually) introduces a revelation, and 「持っているのだ」asserts that revelation with explanatory emphasis.

• 2「持っているべきだ」means 'should have,' expressing an opinion or recommendation about what ought to be. The passage is not arguing what decoration should do; it is stating what decoration actually does.
• 3「持っていてほしい」means 'I want it to have,' expressing the author's personal desire. The tone here is objective and explanatory, not a wish or request.
• 4「持っていてもかまわない」means 'it doesn't matter if it has / I don't mind it having,' which is far too weak and noncommittal. The passage calls this a '主要な役割' (major role) and uses '実のところ' to emphasize its importance, so a dismissive 'かまわない' contradicts the tone.

• 架け橋（かけはし） — bridge, connecting link
• 役割やくわり — role, part
• 至要しような — very important, crucial
• 排除はいじょ — exclusion, elimination
• 実みつのところ — in fact, actually