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【单选题】
While working on a case Dr Watson accidentally fell down a 30ft dry wishing well. Sherlock Holmes lowered him down a rope. 'Can you climb up?' shouted Holmes. 'I' 11 be out before you know it!' came Watson’s reply. But the climb wasn’t as easy as Watson had first imagined. Each hour he managed to climb 3ft—but slipped back 2ft. How long did it take Watson to get out?
A.
28 hours.
B.
20 hours.
C.
15 hours.
D.
30 hours.
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举一反三
【简答题】Tony:Hi, Joy. Would you like to help to save the environment? Joy: 1 What can I do? Tony:Well, first, you can start by turning off the lights. Joy:Yes. That’s easy. Sometimes I turn on the lights with...
【单选题】近代中国,曾统治台湾半个世纪的国家是( )。
A.
俄国
B.
葡萄牙
C.
日本
D.
英国
【简答题】阅读理解。 Christmas is a season to spread joy. Can we spread this joy by caring a little more about nature and going green? Here are some good ideas. Reduce the use of the decorative (装饰) lights. Make use...
【单选题】下列哪一组元素属人体必需的微量元素
A.
铁、铬、硒、钙、铜
B.
氟、铁、硒、铅、碘
C.
硅、钒、铅、锌、碘
D.
铁、锰、氟、锌、碘
E.
铬、汞、锌、铜、碘
【多选题】微波遥感的典型传感器是()。
A.
合成孔径雷达
B.
侧视雷达
C.
扫描仪
D.
摄影机
【单选题】下列哪一组元素属人体必需的微量元素
A.
铁、铬、硒、钙、铜
B.
氟、铁、硒、铅、碘
C.
硅、钒、铅、锌、碘
D.
铁、铜、铬、锌、碘
E.
铬、汞、锌、铜、碘
【单选题】This is the twins' bedroom. We can see _____ beds. [     ]
A.
May's and Joy's
B.
May's and Joy
C.
May and Joy
D.
May and Joy's
【判断题】近代中国,曾统治台湾半个世纪的国家是法国。
A.
正确
B.
错误
【单选题】货币的起源是与下列哪一因素密不可分的()。
A.
私有制
B.
社会分工
C.
商品交换发展
D.
财富分配
【单选题】下列哪一组元素属人体必需的微量元素
A.
铁、碘、氟、锌、锰
B.
铜、钙、硒、铁、铬
C.
碘、铜、汞、锌、铬
D.
硅、铅、钒、锌、碘
E.
氟、硒、铅、铁、碘
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