问题
From the ________ shown in the dead body, he ________to death by a certain poisonous chemical, but I can’t tell exactly which. [ ]
A: symptoms; must have been poisoned
B: signs; should have been poisoned
C: symbols; could have been poisoned
D: appearances; may have been poisoned
B: signs; should have been poisoned
C: symbols; could have been poisoned
D: appearances; may have been poisoned
正确答案是：
同类题型
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