一、单选题(每小题5分,共60分) 1.若命题:,,则该命题的否定是( ) A。, B。, C。, D。, 2.公比为的等比数列的各项都是正数,且则( ) A. B. C. D. 3.如图,不等式表示的平面区域是( ) A.B.C.D.
1. What food does the woman suggest? A. Sandwiches. B. Salads. C. Noodles. 2. What will the man do first with the woman’s car? A. Fill up the tank. B. Wash the windows. C. Check the tire pressure.
一 、选择题(1-8题单选,9-12题多选,每题4分,共48分) 1.以下说法正确的是( ) A.由E=F/q可知电场中某点的电场强度E与F成正比 B.由公式φ=EP/q可知电场中某点的电势φ与q成反比 C.公式C=Q/U,电容器的电容大小C与电容器两极板间电势差U无关 D.由Uab=Ed可知,匀强电场中的任意两点a、b间的距离越大,则两点间的电势差也一定越大
一、选择题(每小题3分,共30分) 1.等腰三角形的两边长分别为4cm和10cm,则此三角形的周长是( ) A.18cm B.24cm C.20cm D.24cm或18cm
1. What will the woman do this afternoon? A. Go swimming. B. Visit her mother C. Buy a present. 2. What is the woman good at? A. Cooking. B. Gardening. C. Doing magic.
1. What are the speakers mainly talking about? A. A news report. B. The man’s work. C. Their favorite physicist. 2. What does the man like about the new restaurant? A. The food B. The service C. The environment
1. What did the woman lose? A. Her car. B. Her purse. C. Her keys. 2. What caused the crash? A. The truck going too fast. B. The boy crossing the street. C. The driver driving carelessly.
1.西周晚期至春秋早期,西至渭河上游、东至渤海湾的不同诸侯的贵族墓葬中的青铜礼器,都具有相似的器物组合、造型样式和纹饰种类。据此可知 A.各地生产力水平趋向平衡 B.不同地区的文化进一步交融 C.青铜礼器被赋予宗教色彩 D.分封制扩大了周朝统治疆域 2.唐代三省以出令、审覆、执行的程序分工;北宋前期的中枢部门则在其管辖权限内实现了决策、执行一体化。这一变化 A.避免了决策失误 B.有利于权力制衡 C.削弱了宰相职权 D.提高了行政效率
一、选择题(1-10每小题3分,11-16每小题3分,满分42分) 1.下列各式:,,x2+y2,5,,,其中分式有( ) A.1个 B.2个 C.3个 D.4个
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