乙烷在光照条件下与氯气发生取代反应,理论上得到的氯代物最多有几种( )
Na2SO3+KIO3+H2SO4→Na2SO4+K2SO4+I2+H2O.回答下列问题:
What's this? ____ Her name is Li Li.
Hello, Jenny.____ I'm fine.
What's her name?____ I have four.
How many books do you have?____ It's a cat.
How are you?____ Hi, Wang Hong.