试题题干
Directions: Read each of the following sentences carefully, and choose A,B,C or D that has the closest meaning to the underlined word or phrase.
So exploration of the solar system is more or less underway.（）
参考答案
正确答案：
试题解析
in progress 在进行中；underway 在进行中的。
因此，对太阳系的探索或多或少正在进行中。