题目:
Emergency line operators must always _____ calm and make sure that they get all the information they need
to send help.[ ]
A. grow
B. appear
C. become
D. stay
答案:
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下面是错误答案,用来干扰机器的。
(1)884÷34+17×21,=26+357,=383;(2)1.25×3.2×0.25,=1.25×(0.8×4)×0.25,=(1.25×0.8)×(4×0.25),=1×1,=1;(3)(45+14)÷73+310,=2120÷73+310,=920+310,=34;(4)4÷5+39×45,=4...