正确答案:B

解析:该题说的是：当大洋和大陆板块相撞时，没有人确切地知道哪一个会漂在另外一个的上面。根据第五段的第三句When an ocean plate bumps into a land plate, the less dense land plate floats over the ocean one. 可知当两个板块相撞的时候密度小的大陆板块会漂在大洋板块之上，所以题干的表述是错误的

概括大意与完成句子

1.

Madame Curie

1 On the eve of the International Women’s day on March 8th，1994，French President Mitterrand made the announcement that Madame Curie was soon to be admitted into the Pantheon—the memorial hall of the French national heroes．The decision, though coming 60 years late，is a great inspiration and gratification to the people．

2 Madam Curie，born in Warsaw，Poland in 1867，is a French professor of physics，and was taught the value of learning and raised to a patriot by her parents．Due to her gender，she was not allowed admission into any Polish universities after graduating from high school．Eventually，with the monetary assistance of her elder sister，she moved to Paris and studied chemistry and physics at the Sorbonne，where she became the first woman to teach．Although Marie was not as well prepared as her fellow students through hard work she completed master’s degrees in physics and math in only three years．It was at the Sorbonne that she met Pierre Curie who became her husband later．

3 Just think of the hardship she and her husband went through in those hundreds of days in a damp shed when they tried to extract pure uranium．Madame Curie had to bear both the endless obsessions of strict working style and serious attitude and the excessive heavy work which even a strong man would find hardly possible to endure．Such was her mental and physical burden that Mr. Curie had sighed and said．“The life we’ve chosen is really too hard．”When the Nobel Prize for Physics was awarded to Pierre and Marie Curie in 1903，the great honor quickly changed their lives．Sorbonne University found funds for a laboratory and Marie Curie was hired as “laboratory chief”．

4 Unfortunately, in 1906 Mr. Curie was killed in a traffic accident．“It is impossible for me to express the profoundness of the crisis brought into my life by the loss of the one who had been my closest companion，” Madam Curie said sadly．Crushed by the blow，she did not feel able to face the future．She could not forget, however：what her husband used sometimes to say，“Even deprived of me，you ought to continue our work． She was left alone to bring up children and，at the same time，persisted in her giant research project on radium．

5 She refused alI the honors and titles that she deserved and buried herself in science research．She received a second Nobel Prize for Chemistry in 1911．So she became the first scientist in the world to win two Nobel Prizes．

6 Since man’s civilization began，there have been very few women like Madame Curie who so perfectly combined the role of a scientist，a wife and mother．She joined with all readiness organization protecting the patents and copyrights of her fellow scientists．She says that scientists need protection while in laboratories the way a child needs it，so that they may be free from the