He got wellprepared for the job interview, for he couldn't risk the good opportunity________. [ ]

A. to lose  

B. losing

C. to be lost  

D. being lost

除非测试方法另有注明，测试前，纺织品玩具或纺织品软体填充玩具应在（）条件下至少放置4小时。

A.20℃±5℃，60%±10%

B.21℃±5℃，65%±10%

C.23℃±5℃，60%±10%

D.25℃±5℃，65%±10%