【简答题】A.The late seenth century. B.The early eighth century. C.The late nineth century. D.The early twentieth century.
【单选题】the exploration of the botanical world on a large scale.
A.
It was not until the eighteenth and nineteenth centuries that; had begun
B.
It was not until the eighteenth and nineteenth centuries when; began
C.
Not until the eighteenth and nineteenth centuries did; begin
D.
Until the eighteenth and nineteenth centuries; began
【单选题】The eighteenth and nineteenth centuries _____ the widespread use of electricity and the birth of the steam engine , leading to the development of factories and cities.
【判断题】多边形建模是通过编辑点、线、面塑造三维空间形体的
【判断题】踢 腿不仅能提高下肢的柔韧性,还可以提高下肢肌肉的爆发力。
【单选题】Bill is ________. [ ]
【单选题】Kangkang was born _____ May the eighteenth. [ ]