生产型粉尘的控制措施有（）。
A.改革工艺过程
B.湿式作业
C.密闭抽风除尘
D.加强个人防护
E.加强监督管理
参考答案：A, B, C, D, E
淋巴结和脾内，以T细胞为主的结构是（）。
A.副皮质区和淋巴小结
B.副皮质区和脾索
C.副皮质区和动脉周围淋巴鞘
D.淋巴小结和动脉周围淋巴鞘
— John went to the hospital alone.
— If he ________ me about it, I would have gone with him.[ ]
A. should tell
B. tells
C. told
D. had told
