Parents of a child with cystic fibrosis demonstrate knowledge of the effects of hot weather on their child when they state that hot weather is hazardous because the child has which of the following

A．Poor ability to concentrate urine.

B．Little skin pigment to prevent sunburn.

C．Poorly functioning temperature control center.

D．Abnormally high salt loss through perspiration.

检查早接触点最好用（）。

A．探针探查

B．牙线检查

C．X线摄片

D．摇动牙齿

E．咬薄蜡片或咬纸