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【单选题】
扁球形至圆锥形,表面类白色,棕色斑点,“虎皮斑”, 描述的是A.
川贝
B.
C.
D.
炉贝
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What can be inferred about the students?
A.
They both disagree with the professor's conclusion.
B.
Jennifer has not yet reached a conclusion about whether animals have language or not.
C.
Mike easily convinced Jennifer to change her mind.
D.
They disagree with each other over whether animals have language or not.
【多选题】在下列的页面置换算法中,哪些算法需要用到当前时间?
A.
先进先出算法（FIFO）
B.
最佳置换算法（OPT）
C.
最近最久未使用（LRU）
D.
时钟算法（CLOCK）
E.
最近未使用算法（NRU）
F.
工作集算法（WorkingSet）
【多选题】在下列的页面置换算法中,哪些算法需要用到引用位(参考位)?
A.
先进先出算法（FIFO）
B.
最佳置换算法（OPT）
C.
最近最久未使用（LRU）
D.
时钟算法（CLOCK）
E.
最近未使用算法（NRU）
F.
工作集算法（WorkingSet）
【单选题】听力原文： Through a large amount of research, many American doctors have drawn the conclusion that mothers who smoke cigarettes before their babies are born may slow the growth of their babies' lungs. The...
A.
Examine whether these children were healthy.
B.
Find out whether their mothers had smoked.
C.
Find why these children suffered breathing problems and lung disease.
D.
Look into the effect that mother's smoking had on their children.
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