The study of thousands of samples from the sea occupied scientists for years and led

A.Pay to Tomson Co.or order the sum of two thousand US dollars.###SXB###B.Pay to Tomson Co. the sum of five hundred HongKong dollars providing the goods they supply are complied with contract.###SXB###C.Pay toTomson Co.out of the proceeds in our No.3 arcount the sum of three thousand US dollars.###SXB###D.Pay to Tomson Co．the sum of four thousand US dollars upon receipt of Bill of Lading No.12345.###SXB###E.Pay to Tomson Co.the sum of two thousan

A.Pay to Tomson Co.or order the sum of two thousand US dollars.#B.Pay to Tomson Co. the sum of five hundred HongKong dollars providing the goods they supply are complied with contract.#C.Pay toTomson Co.out of the proceeds in our No.3 arcount the sum of three thousand US dollars.#D.Pay to Tomson Co．the sum of four thousand US dollars upon receipt of Bill of Lading No.12345.#E.Pay to Tomson Co.the sum of two thousan

He was made ______ hard.

A) to study B) study C) studying D) studied

队列研究(cohort study)

A.study

B.studying

C.studies

D.is study

A.for; study

B.for; to study

C.to; to study

D.for; studies

A.A.firm

B.B.study