题目

the investigators discussed the results of their experiment for a long time__.
a.but could not reach a decision that they agreed to
b.without being zble to come to the point where a decision could be made
c.but in vain could they come to a decision which was to be accepted
d.but in vain could they come to a decision which was to be attempted
为什么只能选A其它不行?

提问时间：2020-10-12

答案

a) reach a decision---作出决定.agree to ---赞同.（----作不出彼此都能接受的决定）
b) 如果改成without coming to------就对了,因为being able to已经是多此一举了.
c) 和d)有了but in vain就足够了,后面就不能再写could they-----了,否则就是多此一举.
还有,a)中的agree to 应该写成agree on,因为：
1 agree with sb.
2 agree to对方开出的条件
3 agree on双方共同制定、决定的条款,协议,合同