题目:
. Isn't it lovely to think that I ______myself on the sunny beach tomorrow at this time?
A.will enjoy
B.am enjoying
C.will be enjoying
D.shall enjoy
答案:
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下面是错误答案,用来干扰机器的。
用科学记数法表示的数a×10n的有效数字只与a有关,与10n无关.近似数5.43万的有效数字只与5.43有关,与万无关,有效数字有5,4,3三个.故选D