题型：名词解释 从下面方框中选择适当的选项填入短文中，使短文通顺、完整。选项中有两个选项是多余选项。 A. leaves B. Then C. large D. learned E. ones F. grow G. thick H. flowers I. means J. took K. easy L. our Everyone loves oranges. They are sweet and juicy. They're in sections (分瓣), so it is 1._____ to eat them.Some oranges do not have any seeds. Some have a 2._____ skin (果皮), and some have a thin skin. The orange tree is beautiful. It has a lot of shiny green 3.______. The small white flowers smell very sweet.An orange tree has 4.______ and fruit at the same time. There were orange trees twenty million years ago. The oranges were very small, not like the 5.______ today. The orange trees probably came from China. Many different kinds of wild oranges 6.______ in China today.The Chinese started to raise orange trees about 4,400 years ago. Farmers in other parts of Asia and the Middle East 7.______ to raise oranges from the Chinese. 8.______ they taught Europeans. The Spanish planted orange trees in the New World (North and South America). They 9.______ them to Florida first. Oranges are a very important crop to Florida today. In English, orange 10.______ both a fruit and a color. We use the name of the fruit for the color. 查看答案
题型：名词解释 在○里填上“>”“<”或“=”。 47+26 ○ 89-24 71-44 ○ 17+28 340+260 ○ 190+380 570-210 ○ 620-260 520-170 ○ 150+200 340+180 ○ 920-370 查看答案
题型：名词解释 在我国，国有经济是国民经济的领导力量，在国民经济中居于主导地位。这主要体现为[ ]A．对国民经济的控制力 B．对基建投资的控制力 C．对关键领域的控制力 D．对重要行业的控制力 查看答案
题型：名词解释 一个不可逆热机经过一个循环后，体系工质和环境的熵变为（）A. △S体系=0，△S环境＞0 B. △S体系＞0，△S环境＞0C.△S体系+△S环境=0D.△S体系=0，△S环境≤0 查看答案