The world's population has grown to more than six times____i

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The world's population has grown to more than six times____it was in 1800.A.that B.what C.which
D.when

The world's population has grown to more than six times what it was in 1800.
答案是B
目前的世界人口与1800年相比已经增长到那时的六倍多!
短语grow to意思是“增加到”.类似的表达法还有increase to,rise to,climb to等.如：

The world's population has grown to more than six times____i the world"s population ( ) more than six billion .is ,has ,a The word's population has grown. The world's population has grown to____ is was in 1800. the world's population has grown very ——.（fast） The population of the world has more than doubled in the pas the population has more than doubled the population of the world has grown very fast ( ）four hund 1.The population of the world has grown very fast _____four The population of the world has grown very fast ____ four hu China has a() population than() in the world. The population has risen more than doubled 这个句子对吗