搜索
On October 16th, 2021, China sent another spaceship into space. The name of the spaceship is Shenzhou XIII. It flew from Jiuquan, Gansu. It took three Chinese taikonauts into space. They are Wang Yaping, Zhai Zhigang and Ye Guangfu. They did experiments (实验) and gave lessons in space. They came back to the earth on April(四月) 16th, 2022. They spent about six months in space. We are proud of them.
1．When did China send Shenzhou XIII into space? ( )| A．On October 16th, 2021. | B．On October 26th, 2021. | C．On April 16th, 2022. |
| A．Xichang. | B．Jiuquan. | C．Wenchang. |
| A．2. | B．3. | C．4. |
| A．They learnt. | B．They exercised. | C．They did experiments. |
| A．About 4 months. | B．About 5 months. | C．About 6 months. |
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
