between and\from to inclusive
不要漏看题目条件 正整数n
(1)6根号k是整数,则根号k是整数,所以可以
(2)举例n=12、n=1
profit=revenue-cost
没看清楚最后问的是哪一类人(不是人的总数!)
不要忘了隐含条件x+y=1
t^2+5t+6=(t+2)(t+3)
(1) 设t=7x+6(x为倍数)(t+2)(t+3)=(7x+8)(7x+9)=49x^2+49x+63x+72,前4项都是7的倍数,72不是7的倍数,余数为2,所以整个式子余数为2,充分。
(2) 设t^2=7x+1(x为倍数)t=根号7x+1 t^2+5t+6=7x+1+5根号7x+1+6=7x+7+5根号7x+1,前2项都是7的倍数,但5根号7x+1无法确定除以7以后的余数,不充分。
我想知道FA究竟形容谁,是construction还是RC? 感觉好像都可,这题光看which排除不了
27号考试,今天开始每天看一集语法之光,,,到时候直接上考场
"prohibit someone/something from something"或者直接prohibit sth
故只有C正确
对罗马城市塞弗里斯的发掘发现了许多详细的马赛克,描绘了几个容易识别的动物物种:一只野兔、一只鹧鸪和各种地中海鱼类。奇怪的是,在这些马赛克创作时,大多数物种并不生活在塞普霍里斯地区。然而,由于相同的图案出现在其他罗马城市的马赛克中,塞普霍里斯的马赛克很可能是由来自罗马帝国其他地区的旅行工匠创作的。
C选项:所有的图案都出现在别的城市过。并不是必要条件,因为即使没有出现在别的城市,也不代表就不是别的城市的画家画的
E选项:Correct. 没有一个住在罗马各个地方的人都拥有的普遍的镶嵌工艺设计范本。取非的话,可能即使这些动物不生活在这里,但这里本地的画家也会画
A本身没错,但并不是作者反驳的地方,journalist看real GDP per capita,但作者认为应该关注growth rate of real GDP per capita
B journalist并没有提到growth rate
C journalist 没提到productivity
D高估的不是amount而应该是growth rate
E. Is correct because it is telling use that Journalist failed to consider historical evidence about US economy.
"Some journalists have argued that the United States economy performed ideally in 1997. However, the real GDP is almost always higher than ever before; it falls only during recessions. One point these journalists overlooked is that in 1997, as in the twenty-four years immediately preceding it...."这些记者忽略的一点是,1997年和之前的24年一样,实际人均GDP每年的增长速度比1873年至1973年的平均速度慢了近一半。如果1997年的经济真如人们所说的那样强劲,那么1997年的实际人均GDP增长率就会超过1873年至1973年的实际人均GDP平均增长率
D. the rate of fatty foods consumed指的是被吃掉的食物占所有食物的比例
E. the rate of people consuming fatty foods是吃fatty food的人站所有人口的比例
而实际的意思应该是两国消耗fatty food的速率
emmmm,对方案推理总是忘记选项要与方案有关....总是靠感觉做题.....
A. proportion of the Greenville Times's total revenue was generated by advertising sales,无关
BE都是他因削弱
原文 If the population of these other species were increased
B 若population现在受限,则增加其他食物的population并不会减少吃老鼠染病的数量
D 全文都在说是在幼虫时期感染,D选项说adult会不会感染,无关
AC. their 错误
BDE:例子
[1] The committee chose Mr. Smith of Left Block, who was the most experienced member, to lead all the management-related operations.
Many of you will right away discard this sentence as “incorrect” because “who” is not preceded by “Mr. Smith”, the noun it should logically refer to. Well, this sentence is absolutely correct. There is no modification error here. Here “who” correctly modifies “Mr. Smith”.
This is so because the newly added prepositional phrase “of Left Block” is a modifier that modifies “Mr. Smith”. So it is placed next to that entity. This prepositional cannot be placed elsewhere in the sentence without violating the structure and the meaning of the sentence. So now instead of just “Mr. Smith” in sentence 1, we have a “noun phrase” in sentence 2 – “Mr. Smith of Left Block”. In this scenario, “who” has the liberty to jump over the preceding preposition phrase (modifier) to modify the HEAD of this noun phrase – “Mr. Smith”
and
[2] The committee chose Mr. Smith in the last meeting, who was the most experienced member, to lead all the management-related operations.
However, the sentence [2] is not correct. Here “who” ends up modifying immediately preceding noun “the last meeting”, resulting in modifier error.
This is so because “in the last meeting” does not modify “Mr. Smith” because it is an adverbial modifier and hence cannot modify a Noun. It rather modifies the action “chose”. When did the committee choose? It did in the last meeting. This prepositional phrase can actually be placed right in the beginning of the sentence, after “The committee”, or before “Mr. Smith” to convey the intended meaning. Hence, here “who” cannot jump over the preceding noun. Notice how per the context of this sentence, the expression “Mr. Smith in the last meeting” is not a noun phrase. Contrast this with the noun phrase in the original sentence “Mr. Smith of Left Block”.
若介宾短语修饰前面的名词,则which/who可以跳跃修饰前面的名词,但例子2中的“in the last meeting”和BD中的in the country一样,虽是介宾短语但不修饰前面的名词,故不能跳跃修饰
if the deal虚拟语气用were
老师,to be sighted作为定语怎么理解呀,对不定式有点困惑。谢谢!
A. 他因削弱
BD. 其他鸟怎么样,与crookbeak迁移的真正原因无关
E. 削弱
第一排最左边必须是1,第二排最右边必须是6,枚举法