单选题The accuracy of scientific observation and calculations is always at the mercy of the scientist’s timekeeping methods.Aunder the control ofBwithin the kindness ofCbeyond the reach ofDout of the control of
单选题
The accuracy of scientific observation and calculations is always at the mercy of the scientist’s timekeeping methods.
A
under the control of
B
within the kindness of
C
beyond the reach of
D
out of the control of
参考解析
解析：
固定搭配。句意：科学观测和计算的准确度通常由科学家的计时方法所决定的。at the mercy of在该句指“受…支配”，与under the control of （受…的控制）表达意思相符。
固定搭配。句意：科学观测和计算的准确度通常由科学家的计时方法所决定的。at the mercy of在该句指“受…支配”，与under the control of （受…的控制）表达意思相符。
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