搜索
think want sky inventions tell talk
Mr. Lee is talking about the great (1) ______ with his students in his class. All the students have a lot of interest (兴趣). Tommy (2) ______ the plane is a great invention because people can “fly” in the (3) ______ like a bird now. Eric thinks the computer is a great invention because he can (4) ______ with his dad on the computer. You know, his dad works in London. Judy thinks the watch and the clock are great inventions because people can (5) ______ the time anywhere. All the students like this class and they (6) ______ to talk about it again in the next class.
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
