救命呀！几道托福语法题！

一：主干即The appointments are made by the president.
二：Understanding the past requires examining the ruins. examing the ruins是动

名词构成的短语，作宾语，相当于一个名词
三：as the state's poet laureate是介词短语，作状语，相当于一个副词
四：包含从句。ease是先行词，which是关系代词，相当于：a fluid may be deformed

with ease. with ease=easily.

Acclimatization is [the means] by which an organism adjusts [to living] in an

environment [] which [is normally unsuited to it].

The major [economic] activities of Cheyenne, Wyoming, [include] transportation,

[chemical production], tourism, [but not] governmental activities.

第一个问题 make sb. to do sth 知道吧 当make用被动语态时 to 可以省略。
第二个问题生词多没看懂 估计还是require 的固定句型 不会很难
第三个 固定搭配 sb are selected/made +某职位
第四个生词不认识 影响回答