Research has ______ that smoking causes lung cancer.

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问题 Research has ______ that smoking causes lung cancer.

选项 A、directed
B、indicated
C、judged
D、resulted

答案B

解析 本题为动词辨析题。direct 意为“指挥,指示”;indicate 意为“指出”;judge 意为“判断,断定”;result 意为“起因,由于”。本句大意为:研究表明吸烟导致肺癌。
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