问题
选择题
78. I didn’t sleep well last night because it was too _______ outside.
A．noisy
B．quiet
C．noise
D．Loud
答案
答案：A
搜题请搜索小程序“爱下问搜题”
78. I didn’t sleep well last night because it was too _______ outside.
A．noisy
B．quiet
C．noise
D．Loud
答案：A
对某化合物进行毒性评价时，检出该化合物的LD50为160mg/kg体重，用定期递增剂量法获LD50为500mg/kg体重，其慢性毒性试验结果见下表
| 剂量(mg/kg) | \r\n肝功 | \r\n肾功 | \r\n病理(肝) | \r\n
| 0 | \r\n\r\n | \r\n | \r\n |
| 12.5 | \r\n\r\n | \r\n | * | \r\n
| 25.0 | \r\n\r\n | \r\n | \r\n |
| 50.0 | \r\n* | \r\n\r\n | ** | \r\n
| 100.0 | \r\n* | \r\n\r\n | ** | \r\n
| 200.0 | \r\n** | \r\n* | \r\n*** | \r\n
该化合物的蓄积系数K值为
A．＜1
B．1-
C．3-
D．5-
E．7-