4. A report by the University of Aurora Business School ( ) that three out of every four new businesses are from personal savings accounts.

　　A. founded

　　B. finding

　　C. found

　　D. find

　　【答案】C。句意为：据奥罗拉大学商学院统计，四分之三的新企业来自个人储蓄账户。已经发现了，选择find的过去式，所以答案选C。

　　5.The United States, which is a ( ) of the Middle East peace talks, says Israeli settlements are an obstacle to peace, and the issue has strained relations with Israel's right-wing government.

　　A. contributor

　　B. sponsor

　　C. volunteer

　　D. investor

　　【答案】B。句意为：作为中东和谈的发起国之一的美国说，以色列的定居点是和平的障碍，这个问题使与以色列右翼政府的关系紧张。A.贡献者;B.赞助者;C.志愿者;D.投资者。所以答案选B。