Also, the hyphen between two values (such as “5-10”) functions invisibly as the word “to” or “through,” but it should only be used alone. Therefore, “It moved 5-10 meters” is correct, while “It moved from 5-10 meters” or “It moved between 5-10 meters” is not.
我覺得from...to是用來表達層次逐步變化的內容,在不同層次之間應該用to連接。
題目public transportation跟dealth penalty應該屬於一層,constitutional and tax reform屬於另外一層,中間用to連接。
當然,如果lz覺得pt跟dp不是一層的話,可以把to放在中間,形成from pt to dp to catr,但是選項沒有這種結構,而且meaning上也不太對;)