问题
单项选择题
自动人行道的最大额定速度不应超过（）m/s。
A、0.4；
B、0.5；
C、0.75；
D、0.9
答案
参考答案：C
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自动人行道的最大额定速度不应超过（）m/s。
A、0.4；
B、0.5；
C、0.75；
D、0.9
参考答案：C
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| What do you do at the weekend? Some people like to 1 at home, but others like to go 2 a walk or play football. My friend Jack works hard in a factory during the 3 . At the weekend, he always 4 the same thing. On Saturday he 5 his car and on 6 he goes with his family to a village by car. His uncle and aunt have a farm there. It isn't a 7 one, but there's always 8 to do on the farm. The children help with the animals and give them their 9 . Jack and his wife help in the fields. At the end of the day, they are all 10 and Jack's aunt gives them a big meal. | ||||
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