According to the conversation, what kind of weather is usual for March?
[ A] Cool.
[B]Very hot.
[C]Dry.
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● 若某整数的16位补码为FFFFH (H 表示十六进制), 则该数的十进制值为 (20) 。
According to the text, the relative dry season is_________
[ A] spring
[B]summer
[C] fall
[D] winter
[A]earth
[B]grass
[C]water
[D]ice
David Debut started Computer town UK with the purpose of _________ .
[ A] making better use of computer experts
[ B ] improving computer programs
[ C ] increasing computers sales
[ D ] popularizing computers