张拉钢筋要严格按照计算确定的应力值和伸长率进行，也可酌情改动。
参考答案：错
The magazine is ______reading, so he advised me ____it.
A well worth; buying B very worth; to buy
C worthying , buying D worthy, to buy
主要毒性为视神经炎的抗结核药( )
A．异烟肼B．链霉素C．吡嗪酰胺D．利福平E．乙胺丁醇
