Given: c=l+mc=l+m
Question is p=500−c>150p=500−c>150 true?

(1) c=3mc=3m --> is 500−3m>150500−3m>150 true? --> is ml --> 500>2l+m500>2l+m. Not sufficient.

(1)+(2) Question became is m2l+m=4m+m=5m500>2l+m=4m+m=5m --> m

读题干……这题是个归纳题，不能有新信息的那种……

one chance in a million 是固定搭配，表示几率很小
B选项是 risk of sth/doing sth 做什么的风险
A选项是 risk to sb/sth 对什么来说是风险
但没有 risk to do sth 或者 risk for doing sth的表达

it appears that …it作形式主语 但这里的it是有明确对象的
immute to... 不受...影响; immune from... 免除...
seem, appear, look，feel, smell, sound, taste是系动词，可以替换成be动词，直接接形容词

习惯用语-A as varied as B，A和B要平行，B用来解释、举例A 同such as

B选项 that is 指代不明

E选项 句子中心 主干发生改变

一定要注意看第一句话！！！！！！！

考察：
语意，平行so much 。。as
没有考察not but，仅仅是not，真正考察的是so much。。as的平行；-so much because ..as because..
如果是d选项，那么带进去，so much是多余的，且没有as跟他配合，应该是not through but through，而不应该是not so much through。。but through。。

我觉得C选项也不够严谨啊，也没说除周四以外没有特殊定制的货物，也没说除建筑以外的货物不能特殊定制

又来看一遍错题，发现其实没那么复杂。到底是选cannot be foreseen还是are not foreseeable 还是应该从题目本身给的信息入手。主句前面说了 The spraying of pesticides can be carefully planned 所以后面对应最优的解应该是cannot be foreseen

Let side be a
P = 4a
A = a^2

Sub in equation A=2P+9

a^2 = 8a +9
a^2-8a +9 = 0
a = 9 or -1

So P = 4*9 = 36.

Ron:
C:the major problem with (d) is the incorrect construction "of + NOUN + VERBing".
also, it's unidiomatic to say that a RATE is "half" (or "more/less than half"). you could say that a rate is 50%, but not "half".

A is to B what C is to do是一个习惯表达，而不能用A is to B similar to C is to D

这题真的是。。。。只能矮子里面拔将军。。。。。

我也选了b。。。但是后来想想b只是再一次给结论举了个例子吧，之前是向前倾向后倾，b是向前跑向后跑。然后d的话才是真正的搭桥，语言影响时间形象化＝》d如何移动和形象化时间有关（反过来说就是时间形象化影响行动）＝》行动

E "moving" and "becoming" indicate something that's going on right now - this should be in the past. And "after Katherine Graham's becoming its publisher" is horrible.

That leaves us with A (where the second "it" pronoun is fine, by the way, because both logically and structurally it refers to Wash Post).

C has a problematic pronoun (it) - logically refers to Wash Post but structurally could refer to KG or publisher. Also, this sentence indicates that it moved into the first ranks as a result of having won high praise. The original sentence doesn't indicate that meaning and we can't just change the meaning of the sentence.
D is a sentence fragment - there's no verb for Wash Post, which is the ostensible subject.

B uses past perfect incorrectly (simple past for "it was only after" and past perfect for "it had won high praise" which comes later chronologically than when KG became publisher)

个位数是5，十位数可以是0～149：1*150=150个
十位数是5，个位数可以是0或5，百位数可以是0～14：2*15=30个
百位数是5，个位数可以是0或5，十位数可以是0～9，千位数是0：2*10=20个；或千位数是1：1500=1个；共201个。