什么scientificways

A这是非限定性定语从句,做时你可以变换下顺序,为man solves problems____scientific 很容易选出来用in,in scientific ways:用科学的方法

这个句子不能用that,因为前面有介词介词后面只能用 但是如果把介词也去掉的话就可以用定语从句中,当先行词是way,且在从句中作状语时,引导词可以用in which,that,或者可以省略引导词,这是定语从句的特殊现象只要记住就行了

选A介词in+which结构

选A。in a way用···方法

直接打在空上了Maybe you have read something about the UFO It’s sometimes reported that strange objects have been seen high up in the (1)sky____These UFOs have made a lot of people (2) interested______ Some have been explained in scientific ways; (3) others_____have never been explained 　　It’s not easy to decide whether a report is (4) true_____or not One report of UFOs came from a British plane on its way from New York to London in The British plane was (5) flying___ over an island at 19,ooo feet when the captain noticed that something on their left and a little (6) larger______than It was about eight kilometers 　　“It was not one (7) but_____several,” the captain “ We saw one large and six smaller I sent out a radio to report about them and I (8)replied_____the answer that the other planes were coming out to meet Before the planes arrived , the smaller objects entered the big The big object then became smaller and moved______away ”