Question

【題目】The twin sisters have learned a lot_____ they came to China．

A. when B. as soon as C. since D. after

Answer 1

【答案】C

【解析】句意：這對(duì)孿生姐妹到中國(guó)以來學(xué)了很多東西。A. when當(dāng)……時(shí)候；B.as soon as一……就……；C. since自……以來；D.after:在……之后。根據(jù)語境，本句指的是過去某一動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。“since+一般過去時(shí)句子”表示從過去某段時(shí)間以來，故答案選C。