In many parts of the world, cars play an important role in daily life and many societies would not exist without them. So the idea that in 20 years’ time, no one will own cars may be hard to believe
单词填空，每空填一词（满分5分）。 Keep indoors and don’t ____________（暴露）your skin to the sun. They have put f_____________ a plan for reducing the level of traffic. Consid
Joanne was stuck in a traffic jam in central Birmingham at 5：30．and at 6：30 she was expected to be chairing a meeting of the tennis club．At last，the traffic was moving．She swung quickly ra
，则cos(2θ－15°)＝________．
