No other Valentine's Day can be compared with the one when I was nine years old.
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What does the author mean by saying "put the earth at the top of their agenda" in the beginning sentence of the passage？
A. The author intends to discuss the issue of global warming with top government leaders.
B. The author lays stress on the research of the climate of the earth.
C. The author attaches paramount importance to the protection of the earth's environment.
D. The author considers the relation between automating and environmental pollution.
When he heard how well the new company was doing, he took a calculated ______ and invested
A. risk
B. opportunity
C. danger
D. venture
地价是在土地所有权或使用权流转的基础上产生的。()
A. 正确
B. 错误
A．longB．shortC．comfortableD．terrible
A. long
B. short
C. comfortable
D. terrible
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