单选题In UCSM, where are Call Home conditions for monitoring configured?（）A Call Home Service ProfilesB Call Home PoliciesC Call Home EventsD Call Home Traps

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Migrant Workers

In the past twenty years,there has been an increasing tendency for workers to move from one country to
another._________(51)some newly independent countries have understandably restricted most jobs to local
people,others have attracted and welcomed migrant workers.This is particularly the case in the Middle
East, _______(52)increased oil incomes have enabled many countries to __________(53)outsiders to im-
prove local facilities.__________(54)the Middle East has attracted oil-workers from the USA and Europe.It
has brought in construction workers and technicians from many countries,________(55)South Korea and
Japan.
In view of the difficult living and working conditions in the Middle East,it is not___________(56)that
the pay is high to attract suitable workers.Many engineers and technicians can earn at least___________(57)
1money in the Middle East as they can in their own country,and this is a major attraction.An allied benefit
is the low taxation or complete lack of it.This increases the net amount of pay received by visiting workers
and is very popular with them.
Sometimes a disadvantage has a compensating advantage.__________(58),the difficult living conditions
often lead to increased friendship when workers have to depend on each other____________(59)safety and com-
fort. ___________(60),many migrant workers can save large sums of money partly _________(61)the lack of
entertainment facilities.The work is often complex and full of problems but this merely presents greater
challenge to engineers who prefer to find solutions__________(62)problems rather than do routine work in
their home country.
One major problem which___________(63)migrant workers in the Middle East is that their jobs are tem-
porary ones.They are nearly always on contract,so it is not easy for them to plan ahead with great confi-
dence.This is to be expected since no country welcomes a large number of foreign workers as permanent
residents.____________(64),migrant workers accept this disadvantage,along with others,because of the
___________(65)financial benefits which they receive.

_________(53)
A:call in
B:call off
C:call up
D:call on