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  3. —The scientists are ____ a series of experiments to learn more about how the ...

—The scientists are ____ a series of experiments to learn more about how the ...

admin2020-12-24  29
问题 —The scientists are ____ a series of experiments to learn more about how the body adapts to weightlessness.
选项 A defining
B having
C carrying
D making
答案D
解析科学家正在做一系列的实验，去研究更多关于在失重的情况人的身体如何去适应的问题。
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