快！英语问题

来源：百度知道 编辑：UC知道 时间：2024/05/31 07:32:14
the scientist has made another breakthrough in the field of radiation----- of great importance to the progress of radioactive tevhnology。

a.i think which is
b.which i think it is
c.which i think is
d.about which i think it is

答案和理由 谢谢

C

所加的是插入语，所以AD格式不对。

句子谓语是has made，所以如果选b的话

化简：i think which is^^^^^^

就多处来一个，which在这里指代前面的主句，不引导句

子所以是C

选C
which指代“the scientist has made another breakthrough in the field of radiation”，I think后可直接跟事，of great importance =very important
所以选c

B I think这里是插入语 放在从句的主语谓语之间