更多"What is the passage mainly concerne"的相关试题:
[单项选择]What is the passage mainly concerned about
[单项选择]What is this passage mainly about
A. Call on people to protect sharks.
B. Point out the living environment of sharks.
C. Explain why the sharks are dangerous.
D. An introduction to sharks.
[单项选择]What is the passage mainly about
A. How biochemical changes occur in the human brain.
B. Why biochemical changes Occur in the human brain.
C. How intellectual activities influence brain-cell health.
D. Why people should keep active not only physically but also mentally.