氧分子中的氧原子和二氧化碳分子中的氧原子，其核电荷数都是8，即氧气和二氧化碳两种
题型：填空题
问题：
氧分子中的氧原子和二氧化碳分子中的氧原子，其核电荷数都是8，即氧气和二氧化碳两种物质都含有（填元素名称）______元素．
题型：填空题
小题1:Llama is a(n) _____.
A．zoo
B．boy
C．animal
D．important day小题2:Who can be invited to draw a picture of Wally?
A．Linda, a high school student who loves drawing.
B．Tony, a father who loves drawing animals.
C．Tom, an elementary school student who loves drawing.
D．Susan, a college student who studies art.小题3:How long will Wally’s birthday party last?
A．Thirty minutes.
B．Two hours.
C．Three hours.
D．Four hours.小题4:The Browns will visit Formosa Zoo on Nov.14. Who can get a special present?
A．Ted. He will draw a picture of Wally.
B．Susan. She will send an email to Formosa Zoo.
C．Mrs Brown. She will help make cakes for Wally’s party.
D．Mr Brown. He has the same birthday as Wally.小题5:Stella wants to learn a lot about Wally’s life and history. Which activity should she join?
A．Grandpa Lin’s Story Time
B．Picture Drawing
C．The Birthday Party
D．Best Wishes to Wally