【单选题】

Nobody wants to be (21) . Unfortunately our bodies can (22) problems. When we aren’t (23) , our bodies tell us. Sometimes a part of our bodies hurts. When a part of our bodies (24) , we say we have aches and pains. We can have aches and pains in (25) parts of the body.

We call some simple (26) problems "aches". For example, we can have a headache, a toothache, an earache, a backache or a stomachache. Other simple problems are nor (27) aches, so we describe them in different ways. For example, we can (28) a sore throat, a sore leg, a sore toe.
"Pain" is another word that we use to (29) a problem. We can have a pain in the chest, a pain in the shoulder or a pain (30) the back.A、pain is strong.Also, a pain hurts in a specific place.
When aches and pains aren’t too (31) , we can buy medicine in the drugstore. Usually small aches go away (32) . When pain is more serious, we (33) to visit the doctor (or the dentist). The doctor asks us what our (34) are. The doctor may have to do tests or take X- rays to (35) what is Wrong. Then he or she will tell us what to do.
A．believe
B．know
C．talk
D．say