B to vary表示目的 同时有歧义 是指the growth varies 还是 is projected varies
For these storms is projected 表达没有projected for these storms 好
C vary 应为varies. Growth为单数
D which指代前面的storms 同时整句话找不到谓语
E are projected应为is
同时句子Main idea varies widely 应为main verb

还可以，s^2+t^2=4 ,和8=（根3+s )^2+(t-1)^2,求得 s=1，稍麻烦一点

介词短语只能跟介词短语平行。A中who was a jazz pianist and composer是非限定性定语从句，其会让人读者认为Thelonious Monk仅在过去（was）是爵士乐钢琴家和作曲家。但在逻辑上，显然Thelonious Monk其实一直是钢琴家和作曲家，即，应该用同位语a jazz pianist and composer而不该用定语从句。
非限制性定语从句与限制性定语从句区别。

C/D/E中不会出现修饰歧义吗，可以理解为一个钢琴家，和一个叫TM的作曲家，创作了这些音乐？

E，表示单个的蝗虫很兴奋。应该是单个的蝗虫和其他的蝗虫一起都很兴奋。所以第二句引入新的主语“locusts“比沿用第一句的主语”single locusts“要好。

定语从句中的关系代词 that 或 which 既可以指代单数先行词，也可以指代复数先行词
E.g：These are the parcels that are going to be posted. 这些是准备要寄出的包裹。
之前有道题用that不能指代复数排除了一个选项，到底可以还是不可以看选项是不是特意在考这个考点吧。

B，intended做过去分词修饰steps，表被动
sb intend to do sth,意图做某事
sb intend sth (as sth)，意指
这里是politicians intend smaller steps to protect the fish= smaller steps were intended to protect the fish
类似的如aim，target等。如果是人的目的，那就是 people aiming at，如果是一个东西，比如政策的目的，那么是policy aimed at

whereas nearly six hours a week were spent in 1997.没有说s是谁spent，那么也可以是比如大人工作花费6小时，与前句没有了逻辑关系。

该题提高速度的方法：可以根据尾数来做。
根据15的倍数和29的倍数，只看个位数，加一起得到0的结果只有2种可能：15取尾数5，同时29取尾数5或者15取0同时29取0

B，根据状语从句的就近修饰原则，其有可能修饰的句子为the bag inflated。这在逻辑上是不对的，因为，真正让乘客以为车着火了的应该是烟出来了，而不是安全气囊充气。

因纽特人过着游牧生活，住在冰屋里。
recently指不久前，依然是个过去的时间，用过去时而不是现在完成时。
choice D
PROBLEM: The "up" is unnecessary. The present perfect tense starts in the past and continues into the present. But the use of "until recently" implies that this has stopped, so the present perfect doesn't work.
Remember that "recently", albeit not too long ago, is still a time in the past.

DS注意看清选项再出手

C10,3 - 10*C4, 3; 先看一共几种选法，减去有couple的可能性

What was the price at which a merchant sold a certain appliance? 看清楚题目求什么；数学很大程度根本没有复杂的运算，而是对于审题本身的能力

as many independent institutions charge tuition and fees of under $8,000 a year as charge over $16,000，这里实际是将as charge tuition and fees of under $8,000和as charge over $16,000两件事情进行比较，不再比较两个组织。

倍数的比较：
three times as much as; three times more than; three times B
as many independent institutions charge tuition and fees of under $8,000 a year as those charging over $16,000，这个结构的意思是as被后置，还原成 as many independent institutions as those charging over $16,000 charge tuition and fees of under $8,000 a year，二者一起charge 8000，错误

每四个数的和=3,97是24*4+1，也就是24个3的和加第一个数的和 24*3+2=74

方案推理
目标：reinfection will probably be less
方案： the new antibiotic is prescribed
A削弱
B无关
C削弱
D无关

D为什么不对啊

题设来自A 的份数比例是P，那么来自B的份数比例就是100-P
A和B的价格比是1/1.25=4/5，若A是4P，B的收入就是500-5P
然后，A占所有收入的百分比是r，所以4P/(500-5P+4P)=r/100所以r=400P/(500-P)