学进去-教育应平等而普惠
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类型:阅读单选
难度系数:0.65
所属科目:初中英语

On Dec. 28, a small satellite(卫星) was launched(发射)into space from Taiyuan, Shanxi. It was big news for students at Beijing Bayi School. After all, they designed the satellite.

With the help of space scientists, more than 30 students built this satellite (12 cm long, 11 cm wide and 27 cm tall). This is the first satellite designed and built by middle school students in China.

This August, the school worked with the China Center for Aerospace Science and Technology International Communications(CCASTIC 中国航天科技国际交流中心) and started the satellite program. It allowed space experts to teach students about basic knowledge of satellites.

After several months of hard work, students designed their own satellite. Their main achievement was the design of the satellite’s functions (功能) in space. “We worked together and came up with more than 10 ideas. But after tests and experiments, we settled on four,” Zhu Xun, 16, told Beijing Evening News.

Indeed, they have to consider the weight of the satellite. The satellite will stay in space more than 180 days. Its functions include taking pictures of Earth, radio communication and sending information to Earth. The students hope that the satellite can take photos of smog, typhoons(台风) and other weather conditions.

The students were divided into five groups. The group members worked closely to make satellite models. “Every time we think the satellite we are designing will fly into space, we are so excited and try to do experiments,” said Shen Shulang, 17. They also visited the Chinese Academy of Sciences and other organizations to get inspiration(灵感).

1.________ designed the small satellite.
A.Students from Beijing Bayi SchoolB.Some space scientistsC.Some space experts
2.The satellite can NOT ________.
A.take pictures of EarthB.send informationC.predict the weather
3.The underlined words “settled on” means ________ in Chinese.
A.计算B.确定C.总计
4.________ helped the students build the small satellite.
A.The schoolB.Space scientistsC.CCASTIC
5.What’s the main idea of this passage?
A.The first student-designed satellite was launched into space.
B.Space experts taught the students about the basic knowledge of satellites.
C.Students visited some science organizations to get inspiration.
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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

用户名称
2019-09-19

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

用户名称
2019-09-19
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