A：It's seven o'clock.
B：It's seven thirty.
C：It's eight thirty.
The part in the film Rio _______ the two birds escaped from the crashing plane made some of the audience give a cry.
①扩大了人们的投资渠道，可以保障投资人的资金安全 ②为借贷双方搭建交易平台，提高了融资效率
③提高了资金利用率，带动了经济发展和社会稳定 ④投资者既要关注投资的回报率，要警惕投资的风险性
