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December 25
Dear Jack,
Merry Christmas!
In Australia, summer comes in December. And there is no snow at Christmas. The sun is very hot. We often have a Christmas party on the beach at Christmas. We go swimming and play games. We all have fun. Look at the photo. My family went shopping in the supermarket. My grandma and I bought some food and drinks. My dad bought a Christmas tree. In the evening, we put some gifts under the Christmas tree together. How about your Christmas? Please write to me soon.
Love,
Susan
1．Susan writes the card to Jack on Christmas Day.2．Susan lives in Canada.
3．It’s hot and sunny at Christmas in Australia.
4．Susan’s dad bought a Christmas tree in the supermarket.
5．Susan put some gifts under the Christmas tree in the afternoon.
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
