填空题

What is a "Helix"

【参考答案】

"Helix" is an unrealized mechanical flying machine.
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单项选择题
A．70 dollars.B．49 dollars.C．21 dollars.D．12 dollars.
A．70 dollars.
B．49 dollars.
C．21 dollars.
D．12 dollars.
单项选择题
A．Because it was very hot the whole night.B．Because everything is ready for the repairs.C．Because she had paid a lot for it.D．Because the maintenance workers are quite efficient.
A．Because it was very hot the whole night.
B．Because everything is ready for the repairs.
C．Because she had paid a lot for it.
D．Because the maintenance workers are quite efficient.
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