It saved them an hour during a procedure that would normally take three hours.

[单选题]The teacher's lecture on pronunciation lasted for three hours. Many of us f

[单选题]A．Where in the world can you take an hour's train ride，and pass a forest，a London street，a scene from the Wild West(西大荒)，and a burning building that never burns down? There's only one place，and that's Hollywood，in California． The scenes you see fr

[单选题]Take [vigorous]exercise for several hours a week.A.hot-temperedB.energeticC

[单选题]When problems occur, winners take them as ________A． excuses for their failuresB． barriers to greater powerC． challenges to their colleaguesD．chances for self-development

[单选题]We would like to take this ____ to introduce ourselves as one of the leading importers in our countryA . placeB . timeC . occasionD . opportunity

[单选题]We would like to take this（）to establish business relations with you.A . openingB . opportunityC . stepD . advantage

[单选题]B．Spending two or three hours playing outdoors each day can reduce a child’s chance of becoming short-sighted, a research shows. It challenges (挑战) the belief that short- sightedness is caused by computer use, watching TV or reading in weak light.The

[单选题]13． Either of them can take this job，but I wonder who does everything _________ ．A． the most carefulB． more carefuC． most carefullyD． more carefully

[单选题]First two hours, now three hours—this is how far in advance authorities are

[单选题]First two hours, now three hours—this is how far in advance authorities are