The Supreme Court played a role in whipping up the anticommunist hysteria by ______.
A、upholding the constitutionality of the Smith Act
B、convicting 11 high-ranking Communist leaders
C、supporting the trial of Alger Hiss
D、supporting President Truman's executive order
【正确答案】：A
【题目解析】：最高法院通过支持《史密斯法案》的合宪性，起到了煽动反共情绪的作用。
