1 . Your explanation has clearly ______________ (阐明) the long and difficult sentence.

2 . Yuan Longping, one of the winners of national commendations(表彰), has made a huge______ to the agriculture (农业) nationally and globally.

3 . You’ll need some cash in local c________ but you can also use your credit card.

4 . Recently, people have begun studying the__________(联系) between the natural world and human beings. （根据汉语提示填空）

5 . Sometimes it is more ___________(方便的) to use ATM machine than to go into bank. （根据汉语提示填空）