单项选择题

LT又称（） A. IFN-γ B. 白细胞介素 C. 淋巴毒素 D. 趋化因子 E. 生长因子

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单项选择题

New Yorkers refuse to take the United Nations seriously as they regard it as an unworkable institution composing of things unrealistic. A. 对 B. 错

Excessivedelay to left-turning vehicles is a major reason for installingprotected left-turn phases. ( )
A、正确
B、错误

答案：正确