How did the writer feel when she was asked to write "the sum of a number"?
A. Pleased, because it was an easy question to answer.
Bored, because she wasn't interested in maths.
Confused, because she didn't understand the question.
D. Worried, because she was the only one who didn't know the answer.
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What did she do in the end?
A. She asked the teacher to explain.
B. She copied what someone else wrote.
C. She felt too frightened to write an answer.
D. She suddenly realized the meaning of the question.
What does the writer think of her maths teacher?
A. She taught the writer an important lesson.
B. She valued the intelligence of her students.
C. She was the best teacher the writer ever had.
D. She was the worst teacher the writer ever had.
夹具夹头零件加工中，进行了几次装夹？
A. 1
B. 2
C. 3
D. 4
夹具夹头零件加工中，下列毛坯尺寸最为合理的是：
A. 30mm*30mm*60mm
B. 30mm*30mm*70mm
C. 20mm*20mm*60mm
D. 30mm*50mm*60mm
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