第一步：usher in sth/usher sth or sb into 是不同的意思. usher in 通常连起来= 开创，开启 e.g. These changes could usher in a period of dramatic economic growth. Usher sth/sb into = 引领 e.g. She ushered us into her office and offered us coffee. 所以usher in 很刺眼。

第二步：如果不明白第一步的搭配 那就要拼逻辑了，思考 gusty winds 和 broad area of high pressure是什么逻辑关系.风是由气压差形成的，阵风 gusty winds 是短期高速爆发的气压差。high pressure和气压差没有关系，所以 gusty winds 和 broad area of high pressure没有强因果关系。 A排除。光是high pressure也不能带来fair and dry weather. B 排除。

在AC当中纠结，最后排除C选项的原因是C中的逻辑主语是BY 后面的 analysts, 比较的对象就变成了现在的economy和 analysts have thought 的 economy进行了比较，在逻辑上面说不通。因为have thought 是一个只有起点没有终点的时间观点，对现在有影响，因而无法进行比较。

设改变前weight1=100, 则改变后weight2=80, price恒定为100
(100/80-100/100)/(100/100)*100%=25%

利用恒等量：
0.1x+0.02y=0.05z=0.05(x+y)
(1) y=10
0.1x+0.02*10=0.05(x+10)
(2) z=16, y=16-x
0.1x+0.02(16-x)=0.05*16

第一遍始终没看懂suggests对应的是哪个单数名词，第二次做终于看懂是blending，， blending suggests her range and depth

A 中that of 指代不明，可以指代goal也可以指代majority
正确的平行是is still a goal of a majority of young adults, as it was (a goal) of earlier generations

毕老师，为什么a的reducing是伴随状语，而不是event的定语呢？

Therefore, the total amount of tax Jill paid was (0.04)(0.5T) + (0.08)(0.3T) = 0.02T + 0.024T = 0.044T. The tax as a percent of the total amount Jill spent, excluding taxes, was4.4%

Let T represent the total amount Jill spent, excluding taxes. Jill paid a 4% tax on the clothing she bought, which accounted for 50% of the total amount she spent, and so the tax she paid on the clothing was (0.04)(0.5T). Jill paid an 8% tax on the other items she bought, which accounted for 30% of the total amount she spent, and so the tax she paid on the other items was (0.08)(0.3T).

（4*0.5+3*0.8）%=4.4%

doubt是名词，这里是不是过完，是两个一般过去时

bossy+that的命令性虚拟语气，should要省略

http://fanyi.baidu.com/?aldtype=85&keyfrom=alading&mod=sample#en/zh/presuming
看了很多例句之后发现，presuming这个从句貌似不需要修饰主句主语，后面接句子（that可省略），用法类似于if

平行+核心词

注意独立主格的形式：with XXX ing或者by ‘s ing

presuming的逻辑主语是those traces

注意B选项both and 对象不平行

(1) m - 3z > 0. Insufficient on its own.
(2) 4z - m > 0. Insufficient on its own.

(1)+(2) Remember we can add inequalities with the sign in the same direction --> \(m-3z+4z-m>0\) --> \(z>0\), so \(z\) is positive. From (1) \(m>3z=positive\), so \(m\) is positive too (\(m\) is more than some positive number \(3z\), so it's positive) --> \(m+z=positive+positive>0\). Sufficient.

感觉E说的主动形式比D中的被动更能体现exhibit这个动作的实施者

A.this指代不明
B.主句缺谓语
C.主从句的关系，因果，不是The honeybee's stinger导致blablabla的，而是honeybee's stinger is heavily barbed and stays where it is inserted这件事导致的
D.同C，没有表现因果逻辑