TL;DR 英文選擇題題幹的問題用字 "Which is ... ?" 是對的。這是 "Which of the following is ... ?" 的簡化
（使用Google的幾個需要注意的地方）（有空再補充）
實際例子
Barron's How to Prepare for the TOEFL, 11th Edition
Model Test 7 p.423
34. Which of the following is ... ?
A ... B ... C ... D ...
35. Which is the oldest subsistence strategy?
A MigratingB Domesticating animals
C Farming
D Hunting and gathering
（以下這些線上試題也有如上的 Which of the following ... ? 寫法。有興趣的人自己點來看）
Rutgers, The State University of New Jersey
https://people.cs.rutgers.edu/~pxk/416/exam/old/exam3-2010-f.html
CS 416 Exam 3 Fall 2010
9. Which is true about the Transport Control Protocol (TCP)?
(a) It provides datagram (connectionless) service.
(b) It sends an acknowledgment for each packet received.
(c) It permits incoming data to arrive out of sequence.
(d) It was designed for Ethernet networks.
Purdue University
https://www.purdue.edu/provost/about/provostInitiatives/civics/sample-questions.html
Sample Purdue Civics Knowledge Test Items
2. Which is the most direct way the wishes of citizens are represented in the United States government?
A. Through the efforts of their employers.
B. By the actions of their elected officials.
C. Through the work of trade unions.
D. By the actions of state universities.
6. Which is a common theme in both the Magna Carta and the Constitution of the United States?
A. That individual liberty is essential.
B. That monarchy is the best form of government.
C. That all men are created equal and there should be no rulers.
D. That people must overthrow older governments.
Dutchess Community College
https://www.sunydutchess.edu/_resources/pdfs/SciencePlacementandSampleQuestions2021.pdf
Science Screening Test Guide & Sample Science Placement Test
16. Which is the smallest measurement listed?
a. Micrometer
b. Millimeter
c. Decameter
d. Nanometer
e. Megameter
