小题1:.My brother a__________ a knowledge of computers by careful study. 

小题2:.Can you tell me a________ of time if you’re coming?

小题3:.I a_________ of your trying to earn some money, but please don’t neglect your studies.

小题4:.They a_________ the value of the house at over $250,000.

小题5:.I’m d__________ to hear of your success.

小题6:.When you find someone hurt, you should perform first a___as soon as possible.

小题7:. Why do you value money so much? Is it e__________ to happiness?

小题8:.The d_________ air in the room will make food go bad easily.

小题9:. He has gone to the hospital for special t___________ because of his high fever.

小题10:..Remember to cover the burned area with a dry and clean b_________.

有多条机动车道的，有何不同的行驶规定？