科氏力质量流量计的准确度和重复性可分别达到（）。（A）0.2级和0.2% （B）0.

位于坐标原点处的波源A沿y轴做简谐运动。A刚好完成一次全振动时，在介质中形成简谐横波的波形如图所示，B是沿波传播方向上介质的一个质点，则

A．波源A开始振动时的运动方向沿y轴负方向

B．此后的周期内回复力对波源A一直做负功

C．经半个周期时间质点B将向右迁移半个波长

D．在一个周期时间内A所受回复力的冲量为零

（12分）阅读下列材料

材料一  1941年8月，大西洋会晤中，丘吉尔建议罗斯福发表一个照会，表示：“日本向太平洋西南地区的任何程度的进一步推进，将会造成美国政府被迫采取反措施，甚至导致美国和日本发生战争的局势。”罗斯福私下的反映是：“他(丘吉尔)要我们支持他。现在他对东方——香港、马来亚、印度、缅甸很不放心。我们不得不一次又一次地拒绝他的恐吓日本的坚决要求，因我们尽一切可能不给日本有进攻我们的任何借口。”

材料二  伊克斯日记记载了1941年9月美国部长联席会议的情况：“话题转到俄国的黄金储备上来……显然我们是在力求趁他们的黄金没有告罄之前全部把它弄到手，以抵偿我们提供的货物。从此刻起，我们对苏联采取了租借法案。”

材料三 彩虹是由不相同的颜色组成的，但它们汇集在一起，就成了一条绚丽夺目的彩带。我们的国家也是如此。我们有不同的习惯，哲学和生活方式。我们的理想是可以汇成一个和谐的整体的。。。。。。当我们结束这历史性的聚会，我们定能在世界的天空看到那条希望的彩虹。

——德黑兰会议间罗斯福在丘吉尔生日宴会上的演讲

回答：

（1）结合所知识与材料一指出丘吉尔的目的？(1分)为什么罗斯福要拒绝丘吉尔的建议？（1分）美英会晤的结果和意义(2分)

（2）根据所学知识与材料二指出美国把租借法案扩大苏联的原因及影响。4分

（3）根据所学知识与材料三指出罗斯福提出彩虹构想的背景。（2分）列举反法西斯同盟在其后采取的重大的军事政治行动（2例）。

The largest earthquake (magnitude里氏9.5 ) of the 20th century happened on May 22, 1960 off the coast of South Central Chile.

It generated (生成) one of the most destructive Pacific-wide tsunamis (海啸). Near the

generating area, both the earthquake and the tsunami were very much destructive, particularly in the coastal area from Concepcion to the south end of Isla Chiloe. The largest tsunami damage occurred at Isla Chiloe-the coastal area closest to the epicenter(震中). Huge tsunami waves measuring as high as 25 meters arrived within 10 to 15 minutes after the earthquake, killing at least two hundred people, sinking all the boats, and flooding half a kilometer inland.

There was large damage and loss of life at Concepcion, Chile’s top industrial city. Near the city of Valdivia, the earthquake and following aftershocks generated landslides which killed 18 people. At the port city of Valparaiso, a city of 200,000, many buildings collapsed. A total of 130,000 houses were destroyed--one in every three in the earthquake zone and nearly 2,000,000 people were left homeless.

Total damage losses, including to agriculture and to industry, were estimated(估计) to be over a half billion dollars. The total number of deaths related with both the tsunami and the earthquake was never found accurately for the region. Estimates of deaths reached between 490 to 5,7002 with no distinction(差别) as to how many deaths were caused by the earthquake and how many were caused by the tsunami. However, it is believed that most of the deaths in Chile were caused by the tsunami.

Where did the largest tsunami damage occur（）

A. Concepcion.

B. Isla Chiloe.

C. Valdivia.

D. Valparaiso.

首先推出生猪和活牛等活牲畜期货合约的是______。

A．芝加哥期货交易所
B．芝加哥商业交易所
C．纽约期货交易所
D．纽约商业交易所

龚自珍认为，国家、刑罚、礼乐起源于（）。

A.工

B.商

C.兵

D.农