Valve in the heart enables it to function by opening and closing, preventing blood from passing through.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- bump, dump, hump, lump, pump The function of the heart is to ______ blood through the body.
- The of the heart is to pump blood through the body. A: use B: reason C: power D: function
- The __________ of the heart is to pump blood through the body.( ) A: auction B: function C: sanction D: conjunction
- The<br/>_____ of the heart is to pump blood through the body. A: function B: work C: duty D: responsibility
- The ________ of the heart is to pump blood through the body.