一What's the date today?
—
A:It's April 1st.
B:It's cool.
C:It's Tuesday.
根据钠原子结构示意图,判断下列说法错误的是( )
— Did you notice her enter the office just now?
— No, I ____ (repair) my computer all the time.
北京奥运会祥云火炬的燃料为丙烷,下列关于丙烷性质的描述,属于化学性质的是( )