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Today, my friends and I are going to do a research. We are going to research a shark (鲨鱼). It’s my favourite animal. Do you know how to do that? First, We are going to read some books about shark. Then, we are going to find information from the Internet. And then, we are going to collect pictures of shark. Next, we are going to study and think. Lastly, we are going to write a report about shark.
1．What are the students going to research?2．Where are the students going to find information?
3．How many steps (步骤) are there when the students do the research?
4．Fourthly, the students are going to
5．At last, the students are going to write a
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
