Wang Haijian, Hubei bombing principal, was shot to death for his leading role in __________ a homemade bomb near a branch of state-owned China Construction Bank in Wuhan on Dec. 1, 2011.

A．set off

B．set aside

C．set down

D．set out

关于影响儿童对广告态度的说法，正确的是（）

A.家庭可以改变儿童对广告的态度

B.同伴能使儿童改变对广告的态度

C.同伴的态度能影响儿童对广告的信任

D.家长的态度能控制儿童的消费方式