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【判断题】
CD8+T淋巴细胞被活化后可诱导靶细胞凋亡。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The man was a soldier all his life.
A.
The man died.
B.
The man is alive.
C.
The man is a soldier now.
D.
No right answer.
【简答题】听对话，选择图片。 1. Which is the man's favourite animal? 2. What does the man want? 3. Which picture is right? 4. What's the weather like now? 5. Where is Mike now?
【简答题】读一读，看图判断正(√)误(×)。 ( ) 1. The man is under the tree. ( ) 2. The man is in the house. ( ) 3. The man is in the car. ( ) 4. The man is on the desk.
【单选题】在尺寸链中,下面哪个概念是错误的 ( )。
A.
尺寸链中间接得到的尺寸称为封闭环。
B.
尺寸链中所有都称为组成环。
C.
在其他组成环不变的情况下，某组成环的增大会导致封闭环增大时，该组成环称为增环。
D.
在其他组成环不变的情况下，某组成环的增大会导致封闭环减小时，该组成环称为减环。
【单选题】What level could the man reach after the course?
A.
The man could paint like a master.
B.
The man could paint by himself.
C.
The man could paint under the guidance of the teacher.
【单选题】If X refers to export,M refers to import, then IIT share is:
A.
X＋M
B.
X－M
C.
(X＋M)/(X－M)
D.
1－|X－M|/ (X＋M)
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