【题目】Heart disease is the leading cause of death in the United States, _____ a research report.
A.according toB.because of
C.thanks toD.instead of
在线课程【答案】A
【解析】
考查亟介词短语辨析。句意：根据一份研究报告，心脏病是美国人的头号死因。A. according to按着；B. because of因为；C. thanks to多亏了；D. instead of代替。结合句意，故选A。