The telephone __ by Graham Bell in 1876.A was invented B has been invented C is invented D will b

题目

The telephone __ by Graham Bell in 1876.A was invented B has been invented C is invented D will b
The telephone __ by Graham Bell in 1876.
A was invented
B has been invented
C is invented
D will be invented
这道题应该选A,但是发明电话对现在如果有影响的话是不是应该选B
Was和has been要怎么区分
This is ___ i wanted.
A the one what
B which
C one which
D the one
选什么为什么

答案

第一题肯定是选择A的,因为这句话只是说明过去发生的事情,怎么区分你要看语境,看这个动作是表示完成还是有影响,亦或是只是说明过去的事情
第二个我选择D,one指代某个事物,前面的the表示特指,这个是定语从句,后面省略一个that,因为这是做i want的宾语