优良天数和重污染天数的比例，通过四年的努力，优良天数的比例从60.5%增加到74.2%，增加了13.7个百分点，重污染天数的比例从8.6%下降到3%，下降了5.6个百分点。()

All the risks and rewards of ownership transfer to the lessee
B. The asset and lease obligation will be recorded in the statement of financial position
C. The lease period will cover almost all of the leased asset’s useful economic life
D. The lessor will be responsible for repairs and maintenance of the leased asset

As risk rises, the market value of the security will fall to ensure that investors receive an increased yield
B. As risk rises, the market value of the security will fall to ensure that investors receive a reduced yield
C. As risk rises, the market value of the security will rise to ensure that investors receive an increased yield
D. As risk rises, the market value of the security will rise to ensure that investors receive a reduced yield