The main purpose of this text is to______.
A．present the current status of the debate on the RU-486 pill
B．provide a historical account of the RU-486 pill's use to date
C．propose solutions by which the RU-486 pill can feasibly be introduced into such nations as the United States
D．explain the RU-486 pill's impact on the larger issue of abortion

未分类题沟通网络包括()等使整个社会互相沟通的手段。

未分类题The outbreak of World War II______.A．wasted precious time by delaying the Interstate Highway projectB．had a positive impact by contributing to the means by which the Interstate Highway System was builtC．delayed the start of the project but resulted in more money by which to fund itD．spurred the military to throw their support in favor of the Interstate Highway project

未分类题The US Interstate Highway System was built mainly______.A．to respond to urgent needs that had arisenB．in order to better defend a country in a time of warC．with military needs in mindD．from state taxpayer dollars

判断题热拌沥青混合料面层弯沉值不应大于设计规定，检查数量：每车道、每30米，测1点。 ( )

未分类题The author views the United States Interstate Highway System with______.A．wholehearted approvalB．a judgement of the good outweighing the badC．positive feelings on its economic impactD．critical support