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【单选题】
What has the woman done to her hair?A.
Had her hair cut.
B.
Tied her hair up.
C.
Washed her hair.
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Which one is the background for The Story of an Hour?
A.
The UK in the 19 th century
B.
The UK in the 20th century
C.
The US in the 20th century
D.
The US in the 19th century
【单选题】Is the background information necessary in the introduction of narration?
A.
Yes
B.
No
【简答题】甘种具体行国可以避开某种不愉快的后果,就会增加该行为重现的概率。这种现象称为 强化 。