A-A+
Why does the professor say this:A．To introduce
问题详情
Why does the professor say this:
A．To introduce the topic of cardiac muscle
B．To find out how much the students already know
C．To tell the students what will be on the next test
D．To point out a question that has no clear answer请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：Why does the professor say this:
"How can your heart keep beating and beating, never stopping, and rarely getting out of sync?"
The professor's purpose is to introduce the topic of cardiac muscle, which the rest of the lecture develops. The professor answers her own question by saying It's possible because of the specialized type of muscle--cardiac muscle--that makes up the heart tissue....(2.3)
