选用方框内的单词或词组填空，其中有一个单词或词组是多余的。

landed   impossible   farming   true   helpful   rapid

【小题1】My sister decided to study agriculture, the science of ________, at university.
【小题2】No way is ________ to courage.
【小题3】He who has never been to the Great Wall is not a ________ man.
【小题4】She made ________ progress and was soon the best in the class.
【小题5】Chang’e 4 ________ on the far side of the Moon in 2019.