某儿童长大后想成为宇航员,这种想象属于()
A.科学幻想
B.空想
C.理想
D.做梦
参考答案:C
—________?
—It's a pencil sharpener.[ ]
A. Is it a pencil sharpener
B. What's this
C. This is a pencil sharpener
有吸收功能而没有消化功能的结构是( )
A.食道
B.胃
C.小肠
D.大肠