When asked ________ they needed most, the kids said they wanted to feel important and loved.

A．what

B．why

C．whom

D．which

儿童最容易受外伤的牙齿是（）

A.乳切牙

B.乳尖牙

C.恒切牙

D.乳尖牙和恒尖牙

E.乳切牙和恒切牙