单项选择题
The engineer recommended（）
A. when we look at this question.
B. that values his new ideas.
C. that the process can be made simpler.
D. which is the Mark 2 project.
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单项选择题
A. when we look at this question.
B. that values his new ideas.
C. that the process can be made simpler.
D. which is the Mark 2 project.
