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Marie Curie was a Polish physicist and chemist who lived between 1867-1934. Together with her husband, Pierre, she discovered two new elements (radium and polonium, two radioactive elements that they extracted chemically from pitchblende ore) and studied the x-rays they emitted. She found that the harmful properties of x-rays were able to kill tumors. By the end of World War I, Marie Curie was probably the most famous woman in the world. She had made a conscious decision, however, not to patent methods of processing radium or its medical applications. Marie Curie was born November 7, 1867 in Poland and died on July 4, 1934. Her co-discovery with her husband Pierre Curie of the radioactive elements radium and polonium represents one of the best known stories in modern science for which they were recognized in 1901 with the Nobel Prize in Physics. In 1911, Marie Curie was honored with a second Nobel prize, this time in chemistry, to honor her for successfully isolating pure radium and determining radium's atomic weight. As a child, Marie Curie amazed people with her great memory. She learned to read when she was only four years old. Her father was a professor of science and the instruments that he kept in a glass case fascinated Marie. She dreamed of becoming a scientist, but that would not be easy. Her family became very poor, and at the age of 18, Marie became a governess. She helped pay for her sister to study in Paris. Later, her sister helped Marie with her education. In 1891, Marie attended the Sorbonne University in Paris where she met and married Pierre Curie, a well-known physicist. Marie Curie contributed greatly to our understanding of radioactivity and the effects of x-rays. She received two Nobel prizes for her brilliant work, but died of leukemia, caused by her repeated exposure to radioactive material. What is the main idea of the passage? To give us a general introduction to Madame Curie. To show us how Madame Curie discovered radium. To tell us how Madame Curie developed as a scientist. To tell us how Madame Curie received two Nobel Prizes. Madame Curie was given the Nobel Prize in chemistry because_________. she discovered radium she separated pure radium and calculated its atomic weight she discovered polonium she didn’t patent methods of processing radium Which of the following statements about Madame Curie is Not True? Madame Curie made great contributions to medical science. Madame Curie was very smart and ambitious when she was a child. Madame Curie received two Nobel Prizes in physics. Madame Curie’s husband helped her a lot in her research. 4. We can infer from the third paragraph that_________. ①Madame Curie got married when she was at college. ②Madam Curie had a great ambition when she was young. ③Madame Curie loved teaching more than anything else. ④Madam Curie must have met a lot of difficulties to get high education. ⑤Her father had a great influence on Madam Curie’s future career. ⑥Madam Curie was very smart when she was a child A. ①②④⑤⑥     B.②④⑤⑥    C. ②③④⑤⑥    D. ①②③④⑤ 5. Which is the right order about Madam Curie according to the passage? a. married Pierre       b. attended University       c. discovered radium d. determined radium’s atomic weight               e. won the Nobel Prize in physics A. b, c, a, d, e      B. b, a, c, d, e     C. b, a, c, e, d     D. b, c, a, e, d
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【简答题】Small computers need only small amounts of power, _____ many that they will run on small batteries. A. which B. that C. this D. what
【简答题】以“生活因______而精彩”为题写一篇作文,不少于400字。
【简答题】受精是两性配子结合形成()的过程,为个体发育的起点。当获能的精子和卵子接触后,精子产生与卵周围的()相遇,精子顶体破裂释放出体粒蛋白、透明质酸酶等这个变化称为()。受精时精子进入卵内,卵母细胞浅层细胞质内的皮质颗粒释放出溶酶体酶样物质,使透明带结构发生变化,称为()。最后整个卵子表层的皮质颗粒都发生胞吐作用,这个过程称为()。
【单选题】精细胞与卵细胞受精后发育成为()。
A.
种子
B.
C.
胚乳
D.
子叶
【简答题】植物精子与卵细胞结合形成受精卵的过程叫做______,植物完成了这个过程以后,其受精卵将继续发育为______.
【简答题】在妈妈的精心呵护下,婷婷从一个受精卵发育成青春美少女(如图4),请据图回答: (1)A表示正在受精的卵细胞,此受精过程是在妈妈体内的 完成的。 (2)D是由B经过分裂和 等复杂过程后形成的,其生长发育的主要场所是 ,并通过 和脐带从妈妈的体内获得营养物质和氧。 (3)婷婷体细胞中的性染色体组成为 。 (4)进入青春期后,婷婷体内会出现正常的生理现象是 ,这与卵巢分泌的 激素有关。
【单选题】In the corner of the room ______.
A.
was a small wooden round table
B.
was a small round wooden table
C.
was a wooden round small table
D.
was a wooden small round table
【单选题】In front of the farmhouse _____. [      ]
A.
does a small boy sit
B.
did a small boy sit
C.
sit a small boy
D.
  sat a small boy
【单选题】______, it can cause circular movement.
A.
Small as it is
B.
Small as is it
C.
Small it is
D.
Small as it is
【单选题】I'd like two _____. [     ]
A.
small bowl of noodles
B.
small bowls of noodle
C.
small bowls of noodles
D.
small bowl of noodle
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