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| A．Ellen’s determination to fulfill a childhood dream. |
| B．Ellen’s ability to put her experience into words. |
| C．Ellen’s attitude towards her colleagues. |
| D．Ellen’s scientific and technic skills. |
| A．Those who want to become astronauts should have experience as aeroplane pilots. |
| B．Those who want to become astronauts should have more than one university degree. |
| C．Those who want to become astronauts should be a specific height. |
| D．Those who want to become astronauts should be good sports. |
| A．Spacewalking. |
| B．Working in mission control. |
| C．Coping with unexpected problems. |
| D．Working in conditions of weightlessness. |
| A．Do a study of the first people in space. |
| B．Do a project on Ellen Ochoa as part of their science coursework. |
| C．Find out more about the current state of space research. |
| D．Go to some talks on space travel in films and literature. |
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
