Dear Sir,
I’d like to recommend Daniel for this year.
Daniel is a clever young boy. He can learn things q1.. He can use the computer well. He often h2. at the Helping Hands Club. He does the computer work and sometimes gets information from the Internet for the club.
Daniel always thinks c3. when he works. He plans everything well and works well in a team. He looks after our children’s group on Sundays and all the children like him.
Daniel is really k4.. Last week, a 5-year-old boy lost his way and crying in the street. Daniel was on his way to the club. He took him to the police station. He stayed with the b5.for two hours before his parents came.
All the members at the Helping Hands Club think Daniel should get the award. We look forward to hearing from you soon.
Yours faithfully,
Li Bing
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