He (call) us as soon as he comes back to school.
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The old man is not kind. He(not help) you.
A: I've come out without any money.B: Never mind. I (give) you some.
He (take ) the trip to America in two days.
石英传感器的特性最好的
A. 线性度
B. 重复性
C. 不受温度影响
D. 滞后
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