英検2級effective・efficient・productive・convenientの違い44問｜効果・効率・生産性・便利【全解答】

問1

The safety training was ______ at reducing accidents: the number of incidents fell after it was introduced, although other causes still needed checking.

1. efficient in time
2. productive of reports
3. convenient to reach
4. effective

問2

The new filing system uses fewer staff hours to process the same number of applications, making it more ______.

1. efficient
2. effective in popularity only
3. productive in number
4. convenient in location

問3

The student group had a ______ afternoon, completing six detailed summaries and checking every answer.

1. convenient for transport
2. effective as a guarantee
3. productive
4. efficient only if cheap

問4

The town placed the collection point beside the railway station because the location was ______ for commuters.

1. effective in science
2. convenient
3. efficient in fuel automatically
4. productive of reports

問5

The campaign was ______ in encouraging more residents to use reusable containers, based on its later survey.

1. productive of hours
2. effective
3. convenient to maintain
4. efficient in fuel only

問6

A new delivery route covered the same destinations with less fuel and a shorter driving time, making it more ______.

1. effective only by being popular
2. convenient for everyone automatically
3. productive of rules
4. efficient

問7

The research team held a ______ meeting in which members resolved three questions and agreed on the next experiment.

1. productive
2. convenient to locate
3. efficient because expensive
4. effective in theory only

問8

Parents said the evening class was ______ because it was held near the bus stop after working hours.

1. productive in scientific data
2. effective in reducing waste automatically
3. convenient
4. efficient in all resources

問9

The teacher checked whether the new reading method was ______ in improving students’ understanding, not just enjoyable.

1. convenient to print only
2. productive of fees
3. effective
4. efficient in price only

問10

The electronic booking system became more ______ when it reduced duplicate entries and staff processing time.

1. productive of books
2. efficient
3. convenient because online for everyone
4. effective in all outcomes guaranteed

問11

The volunteers had a ______ day and sorted forty boxes of donated books before closing.

1. effective in law
2. convenient in location
3. efficient with no time data
4. productive

問12

A printed timetable was more ______ for residents without smartphones than an app requiring internet access.

1. convenient
2. productive of research
3. efficient in energy automatically
4. effective at every task

問13

After the trial, the center found that its feedback sessions were ______ at identifying problems with the entrance.

1. effective
2. productive of emissions
3. convenient for every visitor
4. efficient only by costing more

問14

The shared printer used half as much electricity to print the same number of pages, so it was more ______.

1. convenient for all users automatically
2. productive of time
3. efficient
4. effective as a medical treatment

問15

The writers had a ______ morning, finishing the article, checking sources, and correcting every citation.

1. convenient because short
2. productive
3. efficient without input records
4. effective for every reader guaranteed

問16

The museum moved the information desk near the accessible entrance to make it more ______ for visitors.

1. productive of data only
2. effective in reducing accidents by itself
3. efficient with no measurement
4. convenient

問17

その方法は記憶力の改善に効果的でした。

問18

この仕組みは同じ仕事を短い時間で処理でき効率的です。

問19

生徒たちは実りある会議を行いました。

問20

その場所は駅を使う家庭に便利です。

問21

この講座が学習の改善に効果があるか検証します。

問22

この機器は電力を節約するのでより効率的です。

問23

チームは多くの仕事を終える生産的な午後を過ごしました。

問24

紙の案内は一部の来訪者に便利です。

問25

有効な手段でも必ずしも効率的とは限りません。

問26

この仕事は成果物が多く生産性が高いです。

問27

週末の講座は時間が都合よいと感じる家庭もあります。

問28

利用者が便利と感じても長期的に採算が取れるとは限りません。

問29

The training was efficient because accidents decreased, although no information about time or resources was collected.

問30

A convenient route must always use the least fuel even if passengers cannot reach its stops.

問31

A productive meeting is one that lasts many hours without completing anything.

問32

An effective program necessarily helps every person and never has drawbacks.

問33

The new computer is more efficient because it costs more but has not been tested.

問34

The library said that placing a service online automatically made it convenient for residents without internet.

問35

The students worked productively because they sat together for ten hours, even though no work was completed.

問36

A service was proven financially sustainable because users found its location convenient.

長文A｜図書館の電子予約

A public library introduced online bookings for study rooms. The system was convenient for families who wanted to reserve a place from home, but some residents lacked reliable internet. The library kept a telephone option available. Staff compared how long it took to process reservations before and after the change. The online system handled the same number of bookings with fewer staff hours, making it more efficient. However, the managers also wanted to know whether it was effective at reducing missed reservations. They recorded errors and interviewed users rather than assuming faster processing automatically meant better service for everyone.

問37｜Why was the new system more efficient?

問38｜What outcome still needed evaluation?

長文B｜町の科学講座

A town offered weekend science classes near a railway station. Parents described the location as convenient because it was easy to reach after work. The teachers introduced short experiments and wanted to determine whether the activities were effective at improving scientific understanding. During the trial, several student groups completed more experiments than expected and reported having productive sessions. However, the staff spent substantial time preparing equipment. The center therefore compared the number of completed activities with preparation hours before deciding whether the lessons were efficient enough to continue each week.

問39｜Why was the location convenient?

問40｜Why did staff review preparation time?

長文C｜学校の英語学習

A teacher tested whether students learned vocabulary better with short daily quizzes. Scores improved during the trial, suggesting that the quizzes might be effective for a particular learning goal. Yet the teacher was careful because students had also spent more time studying at home. The class tried a different system that took less time to mark and produced the same number of feedback comments. This system was more efficient for teachers. Students also had productive study sessions when they completed targeted exercises rather than simply leaving textbooks open for hours. The teacher planned a longer comparison before drawing a conclusion.

問41｜Why was the learning effect not yet proven?

問42｜What made the marking system more efficient?

長文D｜地域の食品受け渡し

A group of shops offered a shared collection point where customers could pick up grocery orders. The point was convenient for people who passed through the railway station, but difficult for residents who lived far away. The organizers redesigned delivery routes to cover the same stops using less fuel. This made the operation more efficient. Staff also asked whether the change was effective at reducing total vehicle trips, since some customers drove extra distances to collect orders. Volunteers held productive meetings and developed clearer instructions. Managers continued the trial while assessing convenience, costs, and environmental outcomes separately.

問43｜Why was the revised route more efficient?

問44｜Why was the environmental effect still uncertain?