• 2022-06-07 问题

    The wings of a bird function as a(n)( ). A: parachute B: lever/pulley system C: airfoil D: canopy E: hydrofoil

    The wings of a bird function as a(n)( ). A: parachute B: lever/pulley system C: airfoil D: canopy E: hydrofoil

  • 2021-04-14 问题

    Alexander Graham Bell first came to the new 1)______for his 2)______. In 3) ______, he moved to Canada. Later, at the age of 4)______, he moved to Washington. For a time, Bell and his father had both studied and worker together on the development of 5)______and the teaching of the 6)______ . In 7)______, Bell exhibited an apparatus to transmit 8)______ by electricity and this was the basis of the modern 9)______ . In 10)______, with assistance, Bell, a pioneer of the hydrofoil, built a 11)______, which was able to travel over 70 miles per hour. In 12)______, Bell 13)______in Nova Scotia, and that province has established the Alexander Graham Bell National Historic Park in his memory.

    Alexander Graham Bell first came to the new 1)______for his 2)______. In 3) ______, he moved to Canada. Later, at the age of 4)______, he moved to Washington. For a time, Bell and his father had both studied and worker together on the development of 5)______and the teaching of the 6)______ . In 7)______, Bell exhibited an apparatus to transmit 8)______ by electricity and this was the basis of the modern 9)______ . In 10)______, with assistance, Bell, a pioneer of the hydrofoil, built a 11)______, which was able to travel over 70 miles per hour. In 12)______, Bell 13)______in Nova Scotia, and that province has established the Alexander Graham Bell National Historic Park in his memory.

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