Community workers on Jiangsu Street in Shanghai recently put a smart device（設(shè)備；裝置）on water taps（龍頭）of old people living alone．
   If an old people uses less than 0.01 cubic meter（立方米）of water in about 12 hours，the device will send an alarm（警報(bào)）to the community workers，who will then rush to check if the old person is okay．
   Reports say the community workers also plan to put a device on the doors of old people staying alone to tell them if their doors keep closed for a long time．
   Many people on the Internet say the move is a good example of technology serving people and call for its wide use across the country．
   Fixing（安裝）smart devices on water taps and doors is not very difficult．All one needs is a sensor（傳感器），a SIM card，and a coding（號(hào)碼；密碼）allowing it to make calls when something goes wrong．However，one needs to make sure（確保）that a staff worker（員工）is waiting at the other end of the system to hear the alarm，which could go off（發(fā)出響聲）even late at night or in the early morning．
   To make sure that the system works well，a community worker or several of them have to be there on standby 24 hours a day，seven days a week．
   So the community workers play an important part in the whole arrangement（安排）by caring for the old．

（1）The smart device on water taps was fixed to

C

C

．
A．help the old get water easily
B．make community workers live a comfortable life
C．look after the old living alone
（2）If the alarm goes off，

B

B

．
A．community workers will offer every old person 0.01 cubic meter of water in about 12 hours．
B．community workers will rush to check if the old people is okay．
C．the device on the water tap will stop working．
（3）What do the community workers plan to do？

A

A

A．Fix a device on the doors of the old living alone．
B．Put the move on the Internet．
C．Let more people join the move．
（4）From the text we can know fixing the smart device doesn't need

C

C

．
A．a(chǎn) sensor
B．a(chǎn) SIM card
C．a(chǎn)n ID card
（5）What can we learn from the passage？

C

C

A．The alarm doesn't go off in the early morning．
B．If the alarm goes off，the old must close their doors．
C．Many people on the Internet support this move．