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Last year, we had an English teacher from the USA. We called him Mr Black. He often told us that English is very useful. He taught us very well. He was strict (严格的) with all of us. In class, he always gave us much time to speak English. At first, I could hardly (几乎不) understand any words and I could not talk in English at all. But soon I found English was not so difficult and I could talk to my classmates in English. So I began to like it. This year we have a new teacher, Mrs Green. She also teaches us very carefully.
1．Mr Black is from2．Mr Black told us that
3．In class, he always gave us
4．Soon I found English was
5．Mrs Green often teaches us
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
