按要求写成语。 1．含有数字的成语。 2．含有“无”的成语。 3．含有“人体器

已知关于x的一元二次方程（m²-1）x²-6（3m-1）x+72=0．

（1）若x=1是这个方程的一个根，求m的值和方程的另一个根；

（2）求m是什么整数时，此方程有两个不相等的正实数根？

假想用剖切平面将物体某部分切断，仅画出被切断部分的图形，并在断面上画出剖面符号，这种图形称为断面图，分为移出断面图和（）断面图。

一个站在地面上的工人利用滑轮组将重物G提起来，请在图中画出滑轮组的绕线．

Washington: The Bush administration has ________for the first time that it may be willing to ________a multinational force in Iraq to operate under the ________of the United Nations as long as ________by an American. The idea was described by Richard L. Armitage, the deputy secretary of state, as just "________" in discussions at the United Nations. It was first ________publicly last week by Kofi Annan, the United Nations’’ secretary general.Mr. Armitage’’s remarks, made ________to regional reporters and released by ________today, represent ________in course for the administration, which has until now insisted that all ________matters in Iraq remain under total American control. Allowing the United Nations ________would be intended to win the support of the Security Council for ________authorizing the ________ occupation of the country.In his remarks, Mr. Armitage ________to discuss the plans________, saying, "I don’’t think it helps to ________publicly right now." But he described the arrangement under consideration as "a multinational force________" in which "the American would be the U.N. commander."On Monday, Defense Secretary Donald H. Rumsfeld was asked whether he could ________American troops fighting_______. His answer: "I think that’’s not going to happen." But he went on to rule out only "________" meaning by the United Nations, whose troops wear blue helmets over a peacekeeping force in Iraq.

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