问题
选择题
If a substance has a higher density, ____ 2, 000kg/ m³, it will not float on water.
A．say
B．tell
C．speak
D．call
答案
答案：A
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If a substance has a higher density, ____ 2, 000kg/ m³, it will not float on water.
A．say
B．tell
C．speak
D．call
答案：A
