短线交易
参考答案：指投资者在一天当中进行买进与卖出，以赚取差价的交易。
关于早产儿的外观特点，下述哪项是错误的
A．皮肤发亮，水肿，毳毛多
B．头发分条清楚
C．耳廓软骨发育不良，耳廓紧贴颞骨
D．乳腺结节＜4mm
E．男婴睾丸未进入阴囊
He finds _____ very hard to visit Shanghai World Expo 2010 because he doesn't have enough money: [ ]
A. that
B. it
C. was
D. if
