题目内容
We firmly ______ the fundamental principles of Marxism--Leninism.
A. stand up B. stand about C. stand by D. stand back
C
解析：本题考察动词词组。stand up 站起来；起立， stand about 闲立着，stand by 支持；保卫；坚持，stand back 退后，不参与做出决定
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