单项选择题

The use of the chemical may present a certain hazard to the laboratory workers.（）

A. protection
B. indication
C. immunity
D. danger

<上一题 目录 下一题>
热门 试题

单项选择题
For urban areas this approach was wholly inadequate.（）

A. really
B. basically
C. fundamentally
D. completely
单项选择题
Black Americans arc more likely to die of cancer than______.
A. people in other countries
B. white Americans
C. all other Americans
D. their ancestors
相关试题