1. At present, it is not possible to confirm or to refute the suggestion that there is a causal relationship between the amount of fat we eat and the ______ of heart attacks.
A. incidence
B. impetus
C. rupture
D. emergence
2. The new technological revolution in American newspapers has brought increased ______, a wider range of publications and an expansion of newspaper jobs.
A. circulation
B. reproduction
C. manipulation
D. penetration
【考博英语补全句子】
1. The stick in the water seems _______ ________ _______ ________broken. (插在水里的棍子看起来好像断了。)
2. Make up your mind ________ ________(马上).
1.A
【句意】现在，去证实或驳斥这种观点(即我们所摄入的脂肪量和心脏病发作的发生率之间存在因果关系)是不可能的。
【解析】名词词义辨析。incidence“发生率;影响”;impetus“动力;促进;冲力”;rupture“破裂;决裂”;emergence“浮现;发生;露头”。由关键词“heart attacks心脏病发作”的对应知“发生率”符合语境，由此知A项正确。
2.A
【句意】美国报纸的新技术革新带来了发行量的增加，出版范围的拓宽以及报纸行业工作岗位的增加。
【解析】名词词义辨析。circulation“流通;循环;发行量”;reproduction“繁殖;复制”;manipulation“操纵;篡改”;penetration“穿透;渗透;进入”。由关键词“a wider range of publications出版范围的拓宽”知这里指代“发行量的增加”，由此知A项“发行量”正确。
【补全句子参考答案】
1. 答案：as if it was
2. 句意：马上做决定。
答案：right away