[填空题]My mother spends about two hours every morning(clean)______the house.

[填空题]My mother spends about two hours every morning(clean)（）the house.

[填空题]Bob spends about two hours every day doing his homework. It ______ about two hours to do his homework every day.

[填空题]The Dreamer type never spends long hours in front of a desk.

[简答题]Research findings show we spend about two hours dreaming every night，______________________ (无论我们白天可能做了什么)．

[单项选择]Passage Nine

Olympic Torches

Every two years, people around the world wait in anticipation as a torch-beating runner enters the Olympic arena and lights the cauldron. The symbolic lighting of the Olympic flame marks the beginning of another historic Olympic Games.
The opening ceremony is the end of a long journey for the Olympic torch. By the time it arrives in the stadium, it has traveled thousands of miles. It may have crossed oceans and deserts and traversed mountains. It may have been carried on planes, trains, bicycles, boats, and even dog sleds. And it will have passed through the hands of thousands of different people around the globe.
History of the Torch
Fire has always held great power for humans. It cooks our food, keeps us warm, and lights our way through the dark.
The ancient Greeks revered the power and fire. In Greek mythology, the god Prometheus stole fire from Zeus and
A. the Greek mythology about Prometheus
B. fire’s applications
C. the necessity of fire for humans
D. the Olympic torch