(____)He wants to play baseball.
(____)Tim was so happy because he got a gift.
(____)Why are you wearing a Tshirt?
(____)I am going to the cinema tomorrow.
(____)It's difficult to fly a kite.
选做题:在下面两题中选做一题;若两题都做,只以第(I)题计分.
(I)2010年上海世博会正在举办,其中中国馆投资约1095600000元,将这次投资经费用科学记数法可表示为____ 元(保留两个有效数字).
(II)比较大小:sin57°____ tan57°(可用计算器计算,填“>,=,<”之一).