板块学说把全球分为六大板块，这六大板块分别是指，南极洲板块、印度洋板块、____

在一个容量为15的循环队列中，若头指针front＝6，尾指针Year＝9，则该循环队列中共有______个元素。

（1）用乙烷制备1-氯乙烷的反应类型是__________________

（2）用乙烯制备氯乙烷的化学方程式是__________________

（3）比较上述两种方法，第_________（填序号）种方法好，其原因是______________________

阅读材料，回答问题：

材料一：在过去100多年里，人类发明了火车、电子计算机、汽车、轮船、电灯、飞机等。1969年问世、1993年才对公众开放的因特网迅速发展，目前，全球网上用户已达三亿多，计算机网络已经把世界连成了一个“地球村”。世界各个地区越来越紧密成为一个整体，相互之间的联系和依赖性空前增强，国际竞争也越来越激烈。任何一个国家如果想得到发展，就不能忽视这种全球化的潮流。而这种潮流在经济领域体现得最为明显。

材料二：地球是人类的共同家园，然而，随着科学技术的发展和经济规模的扩大，全球环境状况在过去几十年里持续惩化。新一届联合国气候变化大会定于2011年12月将在南非德班召开。联合国环境规划署执行主任阿希姆·施泰纳敦促发达国家“尽快将许诺落实为行动”，同时呼吁发展中国家“不做旁观者扮演应有的角色”。

材料三：20世纪的中国，提出“中国离不开世界，世界离不开中国”的战略思想。

（1）材料一中的发明成果分别属于哪一次科技革命的成果？从中你获得的最大感受是什么？

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（2）从材料二中世界各国为什么共同关注气候的变化问题？

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（3）上述材料反映当今世界经济发展的什么趋势？根据材料，计算机网络已经把世界连成一个“地球村”，使各国经济之间形成了什么样的关系？

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新区SIS系统控制器CPU是采用（）控制。

Phyllis Wheatley is regarded as America’’s first black poet. She was born in Senegal, Africa, about 1753 and brought to America aboard a slave ship at about the age of seven. John and Susannah Wheatley bought her for three pounds at a slave auction in Boston in 1761 to be a personal servant of Mrs. Wheatley. The family had three other slaves, and all were treated with respect. Phyllis was soon accepted as one of the family, which included being raised and educated with the Wheatley’’s twin 15-year-old children, Mary and Nathaniel. At that time, most females, even from better families, could not read and write, but Mary was probably one of the best educated young women in Boston. Mary wanted to become a teacher, and in fact, it was Mary who decided to take charge of Phyllis’’s education. Phyllis soon displayed her remarkable talents. At the age of twelve she was reading the Greek and Latin classics and passages from the Bible. And eventually, Mrs. Wheatley decided Phyllis should become a Christian.At the age of thirteen Phyllis wrote her first poem. She became a Boston sensation after she wrote a poem on the death of the evangelical preacher George Whitfield in 1770. It became common practice in Boston to have "Mrs. Wheatley’’s Phyllis" read poetry in polite society. Mary married in 1771, and Phyllis later moved to the country because of poor health, as a teacher and caretaker to a farmer’’s three children. Mary had tried to interest publishers in Phyllis’’s poems but once they heard she was a Negro they weren’’t interested.Then in 1773 Phyllis went with Nathaniel, who was now a businessman, to London. It was thought that a sea voyage might improve her health. Thirty-nine of her poems were published in London as Poems on Various Subjects, Religious and Moral. It was the first book published by a black American. In 1775 Phyllis wrote a poem extolling the accomplishments of George Washington and sent it to him. He responded by praising her talents and inviting her to visit his headquarters. After both of her benefactors died in 1777, and Mary died in 1778, Phyllis was freed as a slave. She married in 1778, moved away from Boston, and had three children. But after the unhappy marriage, she moved back to Boston, and died in poverty at the age of thirty.

The word "extolling" in the last paragraph is closest in meaning to________.

A．welcoming

B．stating

C．bemoaning

D．praising