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The Grade 3 students at Sunshine Primary School collected a lot of empty(空的)bottles. In July, they are going to take the bottles to a recycling centre(回收中心). They are going to sell(卖) the bottles and buy some books for the school library.
Kate made a bargraph(柱状图) to show the number of the bottles they collected. This is the bargraph.
1．In November, the students collected _______ empty bottles. ( )
| A．80 | B．60 | C．40 |
| A．10 | B．20 | C．30 |
| A．October; February | B．September; April | C．January; March |
| A．Because they want to do something for their school. |
| B．Because they like empty bottles very much. |
| C．Because they want to use the bottles to make other things. |
| A．They are going to buy a lot of empty bottles from the recycling centre. |
| B．They are going to buy some books for the school library. |
| C．They are going to sell the bottles in the market. |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
