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L: What is this? 1.______
M: No, it isn’t. It’s a strawberry.
L: What’s this? Is this a pear?
M:Yes,it is. 2.______ It’s sweet.
L:Oooh, 3._____
L:4._____
M:It’s a lemon.
M:No!No!
L:Yuk! 5._____
| A．It’s sour! |
| B．yum! |
| C．What’s that? |
| D．It’s a pear. |
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
