MIDI文件中存放的是描述乐曲演奏过程中的指令。()
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What would be the best title for the text？
A. The Genetic Code of Cancerous Tumor
B. New Development of Cancer Therapy
C. Probe into Targeted Cancer Therapy
Different Approaches to Cancer Therapy
国际上流行的视频制式标准为有NTSC、PAL、VGA三种制式。()
风扇皮带过松或沾有油污打滑，将引起发电机不发电。()
It is implied in the last two paragraphs that______.
A. the acidification is an indicator of the declines of the ocean
B. humans should harmonize their activity with the laws of nature
C. climate change has endangered many marine creatures
D. most energy for future development can be obtained from the sea
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