The longer the product's service life, the more favorable the saving of resources

He was hailed _________a hero for saving an old man's life in the fire. A: to B: in C: as D: of

智慧职教: A rescue worker risked his life saving two tourists who _________ in the mountains for two days.

Which of the following may be used to prevent heart disease?（ ） A: regular exercise B: life saving surgeries C: a healthy diet D: cholesterol-lowering drugs

The government has to consider whether the destruction of one human life can be ______ by the hopes of saving others. A: notified B: specified C: justified D: magnified

This ten-year-old boy lost his life () his classmate in the water. A: trying to save B: tried to save C: to try saving D: to try to save

A rescue worker risked his life saving two tourists who＿＿in the mountains for two days. A: are trapping B: have trapped C: were trapping D: had been trapped

46.___ A: To standardize daylight saving time. B: To establish year-round daylight saving time. C: To abolish daylight saving time. D: To shorten daylight saving time.

中国大学MOOC: Which are the colours of life-saving appliances?

中国大学MOOC: Which of the following life-saving appliances is NOT introduced in the course?