单选题 They spent all their spare time ______ their spare money, on their experiments.
【正确答案】 B
【答案解析】[解析] 本题考查连词词组辨析。as well as“也,和,连同”;as much as“和…一样多”;as long as“只要,和…一样长”;as soon as“一…就…”。句意为:他们把所有的业余时间,连同所有额外的钱都花在实验上。