托福考试

【单选题】thE moBilE rivEr AnD its triButAriEs, whiCh Flow south to thE gulF oF mExiCo, Form most importAnt rivEr systEm in AlABAmA.

【分析解答题】LISTENING 2类型：Lecture话题：Natural science详细内容：说Obsidian是从火山喷发之后一系列活动形成的一个东西，可以做成tools因为它尖锐，之后说了解obsidian的来源就能determine trade between两个地方(中间提了一个叫做B的地方)然后obsidian和火山能对应上，就像侦探查指纹一样，科学家用一个叫XFR的仪器(有题问好处)，一个是防止sample被破坏，另一个就听见一个词export，结果发现obsidian不是这个岛上的。

【单选题】 Although have there been better singers and actresses than Ethel Waters, none typifies the rise from rags to riches more dramatically than she

【单选题】 __________ important development of the Neolithic age was not in the manufacture of stone tools but in the production of food.
A．( The most
B．( Most
C．( Most of
D．( Of the most

【单选题】 The word "confine" in line 17 is closest in meaning to
A．( adapt
B．( train
C．( restrict
D．( organize