An instructor scored a student’s test of 50 questions by subtracting 2 times the number of incorrect answers from the number of correct answers. If the student answered all of the questions and received a score of 38, how many questions did that student answer correctly ？（）
A: 19
B: 38
C: 41
D: 44
E: 46
A: 19
B: 38
C: 41
D: 44
E: 46
举一反三
- Below is a student's answer to the question "What is microeconomics?" If you were the instructor, how would you correct the student's answer?
- Many a student () (ask) the same questions by the teacher in yesterday’s class.
- Compared with predicting on questions, it is more likely to get the correct answers when we predict on answers.( )
- Match a student’s notes to questions in the text
- If you can answer all the questions ( __ ) (correct), you will get a gift from the host.