()是将先拉深好的圆筒形件或管件坯料通过模具使其口部直径缩小的一种成形工序。
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The rudimentary technology is usually regarded as the ______ one.
A. difficult
B. advanced
C. basic
D. Classical
When you evade a problem, you try to _______
A. achieve it
B. avoid dealing with it
C. finish it easily
D. do it with great efforts
If someone backs you up, he/she may
A. agree with you
B. disagree with you
C. give you advice
D. support you in practice
The older chidren like to ____ that little boy.
A. pick on
B. pick up
C. pick out
D. pick off