【单选题】Until 2007, the price of sport utility vehicles (SUVs) rose and each year more were purchased. This experience suggests that
A.
there must have been technological advances in the way SUVs are produced.
B.
the law of demand does not hold true in this market.
C.
there must have movement leftward along the supply curve for SUVs.
D.
there must have been a rightward shift of the demand curve for SUVs.
【单选题】During the 1990s, the price of SUVs rose and each year more were purchased. This event suggests that ________.
A.
there must have been technological advances in the way SUVs were produced.
B.
the “law of demand” does not hold in this market.
C.
there must have movement leftward along the supply curve for SUVs.
D.
there must have been a rightward shift of the demand curve for SUVs.
【单选题】在学习旅游地理诸多方法中,( )能够产生新的体验。
【判断题】1858年,美国的生态文学家,《瓦尔登湖》的作者梭罗(Henry David Thoreau)在与友人的书信来往中首次使用了“Ecology” 也就是生态学这一词。
【单选题】在音频数字化的过程中,对模拟语音信号处理的步骤依次为()
【单选题】在音频数字化的过程中,对模拟的语音信号处理的步骤依次为()。
【单选题】在音频数字化的过程中,对模拟语音信号处理的步骤依次是()
【简答题】supply /sə ˈ plaɪ/ n./v.