Mary sings English songs well and ______. (
A. Jane does too
B. either does Joe
C. so Jane does
D. so does Jane
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--- Don’t play with the knife, ______ you’ll cut your hand.--Sorry, I ______ . (
A. so; can’t
B. and; won’t
C. but; mustn’t
D. or; won’t
Hold on to your dream one day they may just come true. (
A. and
B. but
C. so
D. or
The box was too heavy for me to carry, ______ I pulled it into my room. (
A. so
B. and
C. but
D. or
A公司拟建造一项生产设备,预计建设期为1年,所需原始投资320万元,于建设起点一次投入。为保证项目顺利投产,于建设期期末投入流动资金40万元。该项目经营期5年,该设备按年限平均法折旧,使用期满后报废清理时残值20万元。该设备投产后每年实现现金销售收入200万元,营业成本每年产生80万元。计算项目计算期为( )年
A. 1
B. 5
C. 4
D. 6