In this article, we examine the existence of nice arrangements of stars on the American flag. We show that despite the existence of such arrangements for any number of stars from 1 to 100, with the exception of 29, 69 and 87, they are rare as the number of stars increases.Additional ...
考查冠词用法,句子表示"那是一面美国国旗.上面有50颗星星.","Americannationalflag"表示"美国国旗",元音音素开头,冠词用"an","50颗星星"复数名词,系动词用复数"are".A.a,is不符合题意,B.an,are符合题意,C.an,is,系动词不符合题意.故选:B.【思路点拨】那是一面美国国旗.上面有50颗星星.【解题思路】...
American首字母发音为元音,所以不定冠词选择an,stars是复数,所以系动词选择are,故选B。相关推荐 1That is ___ American national flag. There fifty stars on it.[ ] A. a: is B. an; are C. an; is 2【题目】(). That isAmerican national flag. Therefiftystars.on it. A.a, isB.an ,areC...
aon the American flag by a star. All these states were in the eastern part of the continent. As the nation grew toward the west, new states were added and new stars appeared on the flag. For a long time, there were 48 stars. In 1959, however, two more stars were added to the fla...
athe number of stars on the u s flag 星的数量在u s旗子[translate]
Each on its own is relatively simple and straightforward. Yet many developers are daunted when 2 or more operations need to be combined. What if you need to rotate or zoom about an off-center (or even off-screen) point? How do you combine multiple transformations into a single animation?
4 It's flag football (壁旗槌球). It will be in the Olympics for the first time! That game is like American football, but it doesn't have tackle (填抱住同伴). Players run with flags on their backs (背). Players from the other team pull off (拽下) a flag to make a "tackle"....
Tight closeup of the stars and stripes of an American Flag.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工
美 英 n.星条旗(美国国旗) 权威英汉双解 英英 网络释义 Stars-and-Stripes n. 1. 星条旗(美国国旗)the national flag of the US 释义: 全部,星条旗
Close-up of an American flag with the stars and stripes,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工商银