我国封闭式基金的发售价格一般采用1元基金份额面值加计 ( )元发售费用的方式加以确定。
A．0.01
B．0.02
C．0.03
D．0.04
参考答案：A
Instead of praising your kids for their intelligence, you should____ your praise on the effort they put into succeeding at task, expert say.
A．allocate
B．concentrate
C．circulate
D．accumulate
硫化氢气体的爆炸极限为（）（体积分数）。
A.4.3％～35.5％
B.4.3％～45.5％
C.35.5％～70％
D.15.7％～27.4％
