单选题：Why does the system fall to arrest a wanted person?

题目内容：
Why does the system fall to arrest a wanted person? A．The system is not effective in recognizing people.
B．The system doesn't look at skin color or one's gender.
C．The system doesn't consider people's specific features.
D．The system is highly inaccurate and can be easily fooled.

参考答案：
答案解析：

听录音，回答题 What kind of proof did the man probably have when he

听录音，回答题 What kind of proof did the man probably have when he bought the radio?A

分类：公共英语四级  题型：单选题
查看答案

二氧化氮跟水反应生成硝酸和一氧化氮，其反应的化学方程式为：在此反应中，还原产物与氧化产物的物质的量之比为________

二氧化氮跟水反应生成硝酸和一氧化氮，其反应的化学方程式为：在此反应中，还原产物与氧化产物的物质的量之比为__________。

分类：公共英语四级  题型：单选题
查看答案