题目内容：

Across Britain, burnt toast will be served to mothers in bed this morning as older sons and daughters rush to deliver their supermarket bunches of flowers.But, according to a new study，we should be placing a higher value on motherhood all year.

Mothers have long known that their home workload was just as heavy as paid work.Now，the new study has shown that if they were paid for their parental labours, they would earn as much as ￡172, 000 ayear.

The study looked at the range of jobs mothers do, as well as the hours theyare working, to determine the figure.This wouldmake their yearly income ￡30,000 more than the Prime Minister earns.

By analysing the numbers，it found the average mother works 119 hours a week,40 of which would usually be paid at a standard rate and 79 hours as overtime.After questioning 1,000 mothers with children under 18, it found that, on most days, mums started their routine work at 7am and finished at around 11 pm.

To calculate just how much mothers would earn from that labour，it suggested some of the roles that mums could take on，including housekeeper, part－time lawyer, personal trainer and entertainer.Being a part－time lawyer，at ￡48.98 an hour，would prove to be the mostprofitableof the “mum jobs”， withpsychologist (心理学家 ) a close second.

It also asked mothers about the challenges they face, with 80 per cent making emotional(情感的) demand as the hardest thing about motherhood.

Over a third of mums felt they needed more training and around half said they missed going out with friends.

The study shows mothers matter all year long and not just on，Mother's Day.The emotional, physical and mental energy mothers devote to their children can be never－ending, but children are also sources of great joy and happiness.Investing(投入) in time for parenting and raising relationships is money well spent.

1.How much would a mother earn a year if working as the Prime Minister？

A. ￡30,000.    B. ￡142,000.

C. ￡172,000.    D. ￡202,000.

2.The biggest challenge for most mothers is from____.

A. emotional demand    B. low pay for work

C. heavy workload    D. lack of training

3.What is stressed in the last paragraph？

A. Mothers' importance shows in family all year long.

B. The sacrifices mothers make are huge but worthwhile.

C. Mothers' devotion to children can hardly be calculated.

D. Investing time in parenting would bring a financial return.

4.What can we conclude from the study？

A. Mothers' working hours should be largely reduced.

B. Mothers should balance their time for work and rest.

C. Mothers' labour is of a higher value than it is realised.

D. Mothers should be freed from housework for social life.