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【简答题】
在常温和低温下，单晶体的塑性变形主要通过滑移方式进行，此外，尚有孪生和 等方式。
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: You look worried, David. Anything wrong (19) ? M: Oh, it's nothing, really. W: Are you sure? Like to talk about it? M: Well, to be honest, it's.., it's my mother. She… she.. how shall I put it...
A.
Because his wife has been behaving strangely.
B.
Because his father has suddenly had a heart attack
C.
Because his mother is still so unhappy about his father's death.
D.
Because his daughter is all alone in a big house by the sea..
【单选题】听力原文：W: I often go to cinema. M: Really? W: What does the woman often do? (19)
A.
Read books.
B.
Watch TV.
C.
See films.
【单选题】Questoion16 and 19 will be based on thepassage you have just heard.
A.
By smiling to please others when they need care.
B.
By repeating one behavior familiar to their mothers’.
C.
By changing the environment around them.
D.
By doing something they like.
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