from what appear to be这个句子属于倒装结构,正确的结构应该是 to be xxx appears from what,所以单复数要为单数形式
on condition that 其实相当于suggest/ demand这类比较bossy的动词,后面接should do,但是should省略
n、t都是正整数,问nt乘积的最大质因子。
n和 t的最大公因子是5
n、t的最小公倍数是105
如果n=5,t=70,最大质因子为7;如果n=5,t=15,最大质因子为5,所以条件1不充分
因为最小公倍数是105,7和15唯一符合条件,最大质因子是7,条件2充分
(1)n,t有多种可能,定不了nt自然定不了最大质数。
(2)n,t 只可能是3,5,7之一或二者或三者相乘,最大不超过105=3*5*7,且nt乘积一定同时包含了3.5.7.才有可能最小公倍数为105.故可推出最大质数:7
n和t的积等于n和t的最大公约数乘以n和t的最小公倍数,因此,最大质因数只要看n和t的最小公倍数中最大的质因数是几即可
A选项:’The remarkable similarity‘ is a very rapid movement。。。有问题;
B选项:Thule artifacts being remarkably similar throughout a vast region是独立主格,是句子one explanation is a very rapid movement的状语,但在逻辑上,应该是“相似度”的解释是“移动”;
C选项:’The remarkable similarity‘ is a very rapid movement。。。有问题;
D选项:awkward
ABCD选项:research sth ✅;research on/about/into❌
A选项:books that Baldwin wrote in France while he was living there很冗杂;
C选项:while是连词,身后应该加完整的句子(表伴随状语时可以加分词短语),不能只加介词短语;while in France谁在法国,是professor还是writer?
D选项:written while he lived in France在本选项中是非限定性定语从句。本选项考查了“名词定语的限定性”。用之于本题可知,James Baldwin的书不一定都是他在法国的时候写的,所以,written while he lived in France应该用限定性定语从句。
平行结构:The foundation works to strengthen and the foundation cooperates to improve
A选项:for sb to do sth这一结构使用❌,应该是sb,而不是many planes;用earned作为speed records的定语更直接,简洁,而不是又重新又来了一套主谓宾;
B选项:earning的主语是the pilot;for sb to do sth这一结构使用❌
C选项:aviation was still so new是a time的限定性定语从句,应该用关系词when或者in which来引导,不能用where
D选项;so new such that...❌;
D选项:so new that...✅;earned...作为seventeen official national and international speed records的非限定性定语
独立主格结构;
A选项:low enough so结构❌
B选项:so...that...;such...that;
C选项:so that
D选项:同A;同时独立主格不能由定语从句构成
E选项:同D,B
AD选项:主谓一致discussion, the discussion is singular, wrong subject-agree agreement;
B选项:过去完成时有误;what the extent would be, 'the extent' refer to ???
C选项:'whether...warmer' and 'to what extent' are parallel
D选项:主谓一致;the possibility of... and to what extent...不平行;
E选项:the event that is 中的that指代不清晰;不平行
parallel structure: aiding...pollinating...helping...
A选项:比较对象不对
B选项:did与后面的have时态不一致;如果did换成do,然后将as do those of other cultures应该被放在主句提完之后;
C选项:they指代不准确;as they have in other cultures应该被放在主句提完之后;
D选项:like比较的对象不对等:crafts VS in other cultures
both and要求平行,排除A,B,C
force修饰整个句子而不伤dollar,应用现在分词,选D!
审题又出错了,我没找到比较级!!!
more likely·····than ······!!!→由此排除C,D,E
idiom:wether A, B, or C表列举修anyone→选B
c: was a novelist表示好像现在不是novelist了,语义不对
A选项:没有表达出因果关系来,whereas because does;
B选项:同A❌
C选项:ability to...; due to having the ability of surviving很awkward, unnecessary, nonstandard, wordy;
D选项:ability to , able to do...; because 完美表达因果关系;
E选项:ability to,,,;because of having the ability of surviving很awkward and unnecessarily wordy
比较对象对等即可
ITS后面不能跟动名词只能跟名词,所以its后面只能跟payment.
Argument: 由于在鸟的体内检测不到大量的农药,所以农药中毒不是导致鸟的数量减少的原因。鸟的数量减少是由于农药之外的其他因素。
反驳Argument:即使鸟类不是因为”农药中毒“而导致数量减少,”农药本身“仍然是导致鸟数量减少的因素。换句话说,我们要找的选项是能够证明农药通过其他途径导致鸟的数量减少(不是用鸟类中毒这种方式)。
现在看选项A: 使用农药导致野草数量下降,野草数量下降导致虫子减少,虫子减少导致鸟类食物减少,食物减少导致鸟的数量下降。所以农药通过间接使鸟类食物减少的方式导致了鸟数量的decline。选A。
赞