Many questioners ask me about my hobbies.
查看答案
确定水平位关系即确定正中关系位。（）
A. 对
B. 错
Questions 11 to 18 are based on the conversation you have just heard.
A. She thinks the man should have helped earlier.
B. She doesn’t need the man’s help.
C. She doesn’t know the boxes are heavy.
D. She wants the man to help with the boxes.
下列区域属缓冲区的是:（）
A. 切牙乳突区
B. 磨牙后垫区
C. 后堤区
D. 牙槽嵴顶区
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