恩格斯曾说过：技术决定战术。是战术的需求和技术的进步共同摧生出了马镫。

you del with stress the first thing you should do is to______.find out wht cuses stress B．seek help from your clssmtes C．inquirebout instructions D．mke pln of your workA．find out what causes stressB．seek help from your classmatesC．inquire about instructionsD．make a plan of your work

itHow do you _______itnd wht should you ________it del with;do with B．del with;del with C．do with;do with D．do with;del withA．deal with;do withB．deal with;deal withC．do with;do withD．do with;deal with

A. 2小时；
B. 4小时；
C. 24小时；
D. 48小时；