题目内容
Modern science has given clear evidence ______ smoking can lead to many diseases.
| A．what | B．which | C．that | D．where |
C
解析考查同位语从句。Evidence为中心词，从句smoking can lead to many diseases.
不缺成分用连接词that。 现代科学证明吸烟可以导致许多疾病。选C
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