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【判断题】
按照《统计法》和国务院办公厅转发国家统计局的《统计资料保密管理办法》的规定，对外公布统计资料必须经过严格审批，并实行统一审批的原则。A.
正确
B.
错误
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举一反三
【简答题】如图，AB ∥ A′B′，BC ∥ B′C′，BC交A′B′于点D，∠B与∠B′有什么关系？为什么？
【单选题】According to the interview, Professor Smith indicates that
A.
people are reluctant to talk about privacy publicly in the 1920s.
B.
American women were given more rights and choices in the 1920s.
C.
many women were forced to join the army during the 1920s.
D.
the number of students attending high school decreased in the 1920s.
【多选题】设a，b为不共线的非零向量， AB =2a+3b ， BC =-8a-2b ， CD =-6a-4b ，那么（ ）
A.
AD 与 BC 同向，且 | AD ＞| BC |
B.
AD 与 BC 同向，且 | AD |＜| BC |
C.
AD 与 BC 反向，且 | AD |＞| BC |
D.
AD 与 BC 反向，且 | AD |＜| BC |
【简答题】如图，∠BAC=100°，点M在边BC上，△A′BC和△ABC对称于BC，△A′B′C和△A′BC对称于A′C，△A′B′C′和△A′B′C对称于A′B′，这时点M陆续变成M′和M″，那么∠MA′M″=______．
【单选题】Most surveys find that people are reluctant to place themselves at either the top or the bottom of the social ladder.
A.
uncommon
B.
uncertain
C.
unwilling
D.
voluntary
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