单项选择题
Over the past ten years, natural gas production has remained steady, but （）has risen steadily.
A．consumption B．dissipation C．disposal D．expenditure
单项选择题 The cut in her hand has healed completely, without leaving a （）
单项选择题 Don't let such a （）matter as this come between us so that we can concentrate on the major issue.
单项选择题 In addition to the rising birthrate and immigration, the （）death rate contributed to the population growth.
