Which of the following plays least in fixing the public sector？
A. Weakening the strikers' power.
B. Restricting unions' legal rights.
C. Reducing public-sector pay deals.
D. Making small productivity gains.
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According to the passage, a child who is capable of concrete operations can
A. perform. tasks that may confuse an adult
B. install an extra card on a computer
C. make two rows of coins look the same
D. reason systematically about quantity and space
It can be inferred from Paragraph 2 that______.
A. public-sector unions have been acting stealthily
B. the income in the public sector is indirectly augmented
C. public-sector unions have taken precedence over politicians
D. public-sector unions will fight against government reorganization
According to the passage，who was probably the first European to step on the continent of North America？
A. Bjarni Herjolfsson
B. Leif Eriksson
C. Thorfinn Karlsefni
D. Helge Ingstad
Why does the author mention women and cattle in paragraph 4？
A. To show the level of detail included in the sagas
B. To point out the peaceful intentions of the sailors
C. To provide evidence of a plan to start a colony
D. To describe the division of labor in Norse society
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