皮皮学，免费搜题
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【判断题】
后是在浇灌混凝土并结硬后预应力钢筋。（ ）A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】What was the most important reason for the U. S. government to stop the Vietnam War and withdraw the troops?
A.
The economy.
B.
The expenses.
C.
The lasting time was too long.
D.
The antiwar movements both inside and outside the country.
【单选题】The government stops businessmen（商人）from providing teenagers ____ cigarettes (香烟).
A.
for
B.
and
C.
with
D.
to
【简答题】一杯糖水和一杯等量的纯水同时放置,哪杯水蒸发得快,为什么?
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