What has replaced the era when people could safely keep their front door unlocked?It has been replaced by an era _______________.
A. when people can afford a lot of security devices
B. when people emloy various security devices at home
C. when people attach importance to their life quality
D. when people are keen to purchase insurance
查看答案
Why is it common to see small notices pasted on the windows of the most pleasant of homes?
A. Because people intend to make a fair profit on the sale of their house.
Because people want to show their house isprotected by some security agency.
C. Because people try to create an atmosphere of pleasure and elegance.
D. Because people aim to warn strangers to keep away from their house.
Which of the following is included in the security devices?
A. Dead-bolt locks and security chains.
B. Electronic alarm systems and trip wires.
C. Public-service advertisements launched by an insurance company.
Dead-bolt locks andtrip wires.
Suburban families have steel bars built in sliding doorsagainst burglary.
A. 对
B. 错
不属于外周淋巴器官的是
A. 脾
B. 扁桃体
C. 淋巴结
D. 腔上囊
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