Everybody knows that the United Kingdom consists ____ four countries: English, Scotland, Wales plus Northern Ireland. However, about four hundred years ago Scotland tried to break away from English ____(influent). The Scots wanted to attack England and ____(decide) that France should take the place of England ____ their closest friend. England,____ was unhappy when the relationship between the two countries broke down. Queen Elizabeth I did not want to be left out of any decisions ____(do) with Scotland, so she divided the Scottish lords into several groups so that they would argue with each other instead of ____(attack) England. This ____(arrange) worked well until 1603 ____ Queen Elizabeth died. As King James of Scotland was her only relative, he became King of Scotland and England, and everybody was ____(delight) with the solution.

文章的作者 ____，____ 国著名的____、____ 。

管理不善的玉米地里杂草丛生，会影响玉米的产量，这主要是因为（     ）