Congress was hit with a ______ mail campaign, and nearly 150 bills were introduced which would amend the Constitution to permit Bible reading and prayer in public places.

单项选择题The production of synthetics intensified the drain on energy resources, already sorely pressed by the increase in ______ demand.

单项选择题Moving down the hills and around the curves, the ______ of cars was not able to proceed faster than twenty miles an hour.