Work place
He works at a ____ station in New York.
At home
He gets up at six ten every morning.
He runs for ____ an hour.
On the way to work
He ____ to a bus stop.
The bus ride usually takes about fifty ____.
He thinks the bus ride is ____.
写出划线词词类活用现象。
乐民之乐者，民亦乐其乐。忧民之忧者，民亦忧其忧____
物质
a
b
c
d
反应前质（g）
10
2
反应后质（g）
待测
21
在等差数列{an}中，S10=120，那么a1+a10的值是（ ）
