【单选题】This year they have produced_________ they produced the year before last.
【单选题】下列关于溶组织内阿米巴的描述错误的是:()
【单选题】Britain’s gold and currency reserves ______ £15,977 million,and this year they have repaid foreign loans to the value of £3,500 million.
【单选题】关于溶组织内阿米巴滋养体的描述,错误的是
【单选题】This year they have planted __trees __they did last year.
【单选题】This year they have produced ( )grain ( )they did last year.