选择相应的答句。

( )1. Is there a window?

(     )2. Is it a cat?

( )3. Good morning!

(     )4. Where's my shirt?

(     )5. What's in your box?

A. A ball.

B. Yes, it is.

C. No, there isn't.

D. It's on the bed.

E. Good morning!

桩冠的桩距根尖至少

A．0.1mm
B．0.2mm
C．0.3mm
D．0.5mm
E．1.0mm