题目内容

（）是通过模具利用压力使空心件或管状坯料由内向外扩张的成形方法，以胀出所需的凸起曲面。

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（）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。

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