the tiny increase in the ratio of teachers to students might not be enough. Choice (C) seriously weakens the conclusion,

（A）主体部分是The thirteen original British colonies in North America each had a written charter. ✅
（B）缺少谓语动词
（C）some that 其中that指代some是错误的
（D）all had a 错误
（E）while后面跟完整的句子或ing形式

A，生产新药，取代老药。
CR：政府不让涨价，那我就生产新药，把新药的价格定高些，一样赚更多钱。这个选项比较隐晦。
B，人口增加，总购买量和单价不变，会使人均购买支出降低而不是升高。

discrepancy：医生觉得与病人在一起时间不够（注意是不够不是变短！）&实际上病人与医生相处时间变多
那么能够conform以上2点的就只有B.医生给病人开方子前可选择的治疗手段变多了，对于医生来说他们就要花更多时间来选择，尽管对于病人来说office time变长，但其实变长的只是医生做选择的时间，而非spend with patients的时间。

B的问题主要是，科学家只表明：Finally, some scientists argue that the complex lungs of birds could not have evolved from theropod lungs。 没有说肺部有没有保存下来。

When a caterpillar emerges from the egg on a tree branch,当C出现在树枝上的卵旁边时=当C从树枝上的卵里孵化出来时

When a caterpillar emerges from the egg on a tree branch,当C出现在树枝上的卵旁边时
emerge from sth，从某处出现，如：She finally emerged from her room at noon. 中午，她终于从屋里出来了。

Which of the following hypotheses is best supported by the statements given?下列哪个假设最能得到所给陈述的支持? = 根据上面的陈述，下面哪个是最准确的？

（A）（B）选项前后要比较的对象是set dividends这个动作，所以than后面应该是than they have done（不应该出现be动词）
（C）比较前后平行✅
（D）（E）expect that sb will而非expect sb that they will

（A）......，and also...... and和also在语意上是重复的 先行词是 campaign，后面动词应用单数
（B） ✅
（C）in doing需要句子的动词是doing这个动作的一部分
（D）（E）不平行

⚠️
当“非数字物体”比较时，我们通常会用double(twice) as much as或double(twice) as many as，例如：
twice as many dogs
double as much water
但是，当“数字”比较时，我们不能加as many或as much，例如：
twice the increase
double the decrease

candidates和candidacy需要区分！！！

Independent run for the presidency表示“独立竞选总统职位”，在意思上等同于independent candidacy

C和D二选一。Ron的答案：The actual mistake in choice D is the word "arrangement". "Arrangement" doesn't refer to the process of arranging something; it refers to the arrangement that results from that process.

错选E distinctions A to B是错误的
C选项：not so much...as...

Manufacturers issue cents-off coupons to get consumers to try their brand of product with the hope that the consumers who try their brand will switch their brand loyalty.
第一个to do做目的状语，修饰issue，发行优惠券以获取顾客；第二个to do是定语，修饰consumers，获取顾客，这些顾客将会尝试他们的品牌；with the hope做状语，修饰issue，带着什么样的希望发行优惠券。
issue sth to sb，发行，发布

the face value面值，票面价值；redeem，兑换票券，偿付贷款

A city plans to attract new citizens with new housing and new facilities such as parks, recreation centers, and libraries.用新房和新公共设施来吸引新市民。
attract sb with sth，用某物来吸引某人

Other towns and cities nearby have yet to embark on any comparable plans to attract new citizens.附近的城镇还未开始实施计划。
have yet to do sth=have not yet done sth，尚未做某事

researchers' speculation is about the convection, not the masses of hot rock.

First-time computer buyers buying PXC home computers typically buy models that cost much less and have a smaller profit margin per computer than do PXC computers bought by people replacing their computers with more powerful models.
这个长难句可以的。

A. This does not weaken the argument. In fact, Mammoth sold all of its phones. By increasing production it will in all likelihood sell the extra phones.

误诊就两种，有病诊断成没病，和没病诊断成有病。
1. 如果是有病诊断成没病，这个问题比较大，减少了医生的necessary removals。
2. 如果是没病诊断成有病，属于unnecessary removals。

问题问的是可以减少unnecessary removal，不减少necessary removal的原因。

如果新的诊疗手段不犯下第一种错误，同时犯第二种错误的几率大幅减小，那么就可以达到问题的所要求的标准了。

因此B的含义是，新的手段只犯第二种错误，再加上98%的正确率，那么就符合问题的标准了。

C的意思是：
所有被诊断出有病的人都是有病的，但是如果被诊断出没病的人当中也有有病的人，那么还是犯了第一种错误，减少了了necessary removals.