because no textbooks are written for any particular class, it is _____ for teachers to adapt materials.
A、unnecessary
B、necessary
C、difficult
D、easy
参考答案:B
第5题:
He emphasized a feasible plan which can be accepted by the both sides.
A:.favorable B:possible C:formal D:genuine
答案:B
解析:
题干意为“他强调了一个可行的计划,这个计划双方都能接受。” 句中划线词意为“可行的,可能的”。B项possible意为“可能的,合理的”;例句:We must explore all possible ways to increase food production.我们必须探究增加食物生产的一切可能的途径。A项意为“有利的,讨人喜欢的”;C项意为“正式的,有条理的”;D项意为“真实的,诚 恳的”;故选B。
第6题:
The Constitution's vague nature has given it the flexibility to be adapted when circumstances change.