On Wednesday afternoon, China successfully launched a Long March 2C carrier rocket into space. The rocket took off at 12:01 pm from the Jiuquan Satellite Launch Center.

The mission successfully placed three new satellites, named Shijian-30A, Shijian-30B, and Shijian-30C, into their planned orbits. These satellites were built by a leading Chinese space company. Their main jobs are to study the space environment and test new technologies.

The Long March 2C rocket was made by another Chinese space company in Beijing. It is a large rocket, measuring 43 meters in length and 3.35 meters in diameter (直径). It is usually used to send satellites to orbits close to Earth.

This launch was very important. It was the 608th flight mission for China’s Long March rocket family and the country’s 74th space mission this year, showing China’s growing ability in space exploration.

1.1. Where was Long March 2C launched?

A In Northwest China.

B In Northeast China.

C In Southeast China.

D In Southwest China.

解析：选A。A推理判断题。根据第一段的“The rocket took off at 12:01 pm from the Jiuquan Satellite Launch Center.”可知，长征二号丙运载火箭在酒泉卫星发射中心点火升空，根据地理常识可知，酒泉在甘肃，位于中国西北部。故选A。

2.2. What is the main job of the three Shijian satellites?

A To explore space and test new technologies.

B To provide television signals.

C To find new planets.

D To take tourists to space.

解析：选A。A细节理解题。第二段明确指出它们的任务是“study the space environment and test new technologies”（研究空间环境和测试新技术）。故选A。

3.3. What is NOT told about the Long March 2C rocket in the passage?

A Its company.

B Its length.

C Its use.

D Its weight.

解析：选D。D细节理解题。第三段提到了它的制造公司(“made by another Chinese space company”)、长度(“43 meters long”)和用途(“used to send satellites...”)，但全文没有提及它的重量(“its weight”)。故选D。

4.4. Why was this launch important?

A It was the first time China launched a rocket.

B It was the 608th flight for the Long March rockets.

C It discovered water on the Moon.

D It was the fastest rocket in the world.

解析：选B。B细节理解题。最后一段明确指出，这是长征系列火箭的第608次飞行。选项B直接复现了这一关键信息。故选B。