Question

The world’s population has grown by ______ it was in 1800. A．more than six times...

The world’s population has grown by ______ it was in 1800. A．more than six times that B．six times more than that C．more than six times what D．six times as many as

Answer 1

C

此题考查倍数表达，句意：世界的人口应经增长到1800年的六倍多，后一个分句中was后面缺少表语，故用what,所以选C。