单项选择题
Because of a recent obstacle in production, sales have dropped and accordingly profits have （）.
A．declined B．increased C．broken D．maintained
单项选择题 Shy people never （） set out to attract attention of other people.
单项选择题 The jet quickly （） into the sky and soon went out of our view.
单项选择题 This policy gave （） to private property and led to differences between the rich and the poor.
