根据句意和汉语或首字母提示，填写单词。

  1. He wrote down his name on the_____(石头).

  2. The soft-hearted old man wouldn’t hurt an_____(蚂蚁).

  3. We have five f_____on each hand.

  4. He is not strong enough to l_____the heavy box.

  5. There’s a delicious s_____coming from the kitchen.

正常人每日唾液总量为1000～1500ml，其中腮腺和颌下腺的分泌量占

A．75%

B．80%

C．85%

D．90%

E．95%