英検2級adequate・sufficient・necessary・essentialの違い44問｜十分・必要・不可欠【全解答】

問1

The school checked that the new classrooms had ______ ventilation for the number of students using them.

1. overdue
2. adequate
3. voluntary
4. impossible

問2

The committee did not have ______ evidence to conclude that the new rule had caused the change.

1. eligible
2. temporary
3. renewable
4. sufficient

問3

It is ______ to complete the registration form before the application can be processed.

1. necessary
2. productive
3. consecutive
4. recyclable

問4

Clear emergency instructions are ______ for safely operating the laboratory equipment.

1. optional if needed
2. expired
3. essential
4. merely decorative

問5

The garden managers ensured there was an ______ supply of clean water for the plants during dry weeks.

1. irrelevant
2. expired
3. adequate
4. unrelated

問6

The museum said there was not ______ time to inspect all borrowed artifacts before the opening.

1. consecutive
2. sufficient
3. eligible
4. renewable

問7

Participants must bring the identity documents ______ to complete the required safety registration.

1. convenient only
2. renewable
3. productive
4. necessary

問8

A reliable power supply is ______ to the operation of medical refrigerators that store temperature-sensitive products.

1. essential
2. optional at all times
3. expired
4. unrelated

問9

The school hired enough trained supervisors to provide ______ care during the overnight field trip.

1. adequate
2. misleading
3. temporary as an adjective only
4. unrelated

問10

The report contained ______ information to explain the trial’s main costs, but it lacked details on long-term demand.

1. overdue
2. eligible
3. sufficient
4. automatically final

問11

It was ______ for the group to obtain permission before placing identifiable photographs on a public website.

1. optional under every rule
2. necessary
3. productive alone
4. consecutive

問12

Accurate records of temperature and time are ______ for making a valid comparison between the experiments.

1. unrelated
2. expired
3. voluntary by definition
4. essential

問13

The town wanted ______ staffing to keep its evening study room safe throughout the opening hours.

1. misleading
2. outdated
3. invalid
4. adequate

問14

The organizer said the application had been received but not all ______ details had been supplied for a final decision.

1. sufficient
2. consecutive
3. eligible
4. reusable

問15

The library explained that it was ______ to inspect returned electronic devices before making them available again.

1. optional always
2. unrelated
3. necessary
4. temporary as a rule

問16

The council considered step-free access ______ to a public service intended for residents with limited mobility.

1. unavailable as a cause
2. essential
3. unrelated
4. historical only

問17

その教室には十分な換気があります。

問18

その結論を支える証拠はまだ十分ではありません。

問19

申請には有効な身分証が必要です。

問20

安全な実験には正確な指示が不可欠です。

問21

学校は適切な数の職員を確保しました。

問22

私たちは見直しをするだけの時間がありません。

問23

登録する前に条件を確認する必要があります。

問24

この橋の安全な利用には定期点検が不可欠です。

問25

必要な水の量を確保してください。

問26

判断に十分なデータを集めましょう。

問27

その活動には事前の承認が必要です。

問28

信頼できる資料は客観的な結論に不可欠です。

問29

We have sufficient of evidence to prove the claim.

問30

There is an adequate of drinking water for the trip.

問31

It is necessary for submit the form.

問32

The equipment is essential of safety training.

問33

An adequate number of trained staff means every possible accident has been prevented.

問34

The report contains sufficient data, so every causal explanation must be correct.

問35

The course is essential for all students even though the school states it is optional.

問36

The new study room is adequate because it has no chairs and is inaccessible to half its users.

読解A｜放課後の自習室の安全

A secondary school opened a study room after classes. It wanted the room to have adequate lighting, ventilation, and space for every scheduled pupil. The school also arranged enough trained supervisors to provide appropriate support. Before the trial, managers checked which safety procedures were necessary and explained them to all users. They believed that clear emergency exits were essential to the safe operation of the room. After the first month, attendance was high, but the managers said they did not yet have sufficient evidence to know whether the room would be used as frequently outside examination season. They planned another trial and continued recording costs.

問37｜What did managers consider essential for safety?

問38｜What evidence was still insufficient?

読解B｜地域の水資源調査

A town studied whether a shared rainwater tank could help a community garden. Engineers checked that the tank would hold an adequate amount of water for short dry periods, but warned it might be insufficient during a long drought. Volunteers recorded rainfall and plant water use. The team considered regular cleaning necessary for safe operation and kept the stored water separate from drinking supplies. Accurate records were essential for comparing different months. After six weeks, the tank had worked well, but the committee did not conclude that the project was sustainable throughout the year. It needed additional seasonal evidence.

問39｜Why might the tank be inadequate during a long drought?

問40｜Why were accurate records essential?

読解C｜町の外国語案内

A town published public transport information in several languages. Staff wanted adequate signs and instructions at the station so visitors could find routes safely. A translator checked essential emergency phrases, while designers created a larger-print map for people who had difficulty reading small text. The town considered it necessary to verify important information before putting it on public displays. In the first survey, most users liked the new signs, but some people without reliable internet had not seen the online questionnaire. Officials said the evidence was not sufficient to represent every visitor and planned additional paper interviews.

問41｜What did staff consider necessary before publication?

問42｜Why was the first survey insufficient?

読解D｜博物館の展示品の保護

A museum planned to move valuable objects to a renovated room. Curators said it was necessary to inspect the packaging and check insurance conditions before transport. The new room needed adequate temperature and humidity control so the objects would not be damaged. Staff also required clear visitor routes and considered trained supervision essential for handling fragile pieces. The museum had sufficient funding for a small trial move, but not for relocating the whole collection immediately. The director decided to transfer a limited group of objects first and evaluate the results before expanding the project.

問43｜What conditions were needed in the new room?

問44｜Why did the museum start with a small group?