①A Long March 2F rocket carrying the Shenzhou-18 spacecraft with three astronauts was successfully sent into space on April 25th from the Jiuquan Satellite Launch (发射) Center in Northwest China.

②The astronauts are Ye Guangfu, Li Cong and Li Guangsu, with Ye as the leader. It is Ye’s second time to go to space within 3 years. And this is Li Cong and Li Guangsu’s first space flight.

③This launch has a lot of breakthroughs (突破). First of all, launching in April is really challenging. April is famous for being very windy and sandy in the center. So, experts carefully planned the best time to launch according to the April wind speed data from the last 10 years. Secondly, there have been greater technological developments in both the spacecraft and the rocket, resulting in higher safety. Another big change worth mentioning is the new battery (电池) for the spacecraft. It is lighter and can work longer.

④The three astronauts will carry out many tasks during their stay. More than 90 experiments (实验) covering areas such as materials science, life science and medicine will be carried out in space.

⑤A very special task is to raise Zebrafish in space. They will create a simple ecosystem to study how the space environment affects their growth and system balance. If the experiment succeeds, it will be a significant breakthrough to keep vertebrates (脊椎动物) in China’s space program.

⑥Moreover, they will also learn how plants change and get used to the environment by doing the first-ever stem cell (干细胞) study in space. This will help to choose suitable vegetables for space farming.

⑦Besides these experiments, the astronauts will do two or three space walks and six cargo deliveries. And they will further keep the safety of space station.

⑧Exploring space is not just a dream for our country. We are making new achievements continuously, showing the world that China is becoming stronger and stronger. And we are sure the Shenzhou-18 crew will do well, although the tasks have become more complicated and harder.

【小题1】If you want to add a paragraph about “stories of the 3 astronauts”, where can you put it?

A．After Para.2.

B．After Para.3.

C．After Para.4.

D．After Para.5.

【小题2】What does the underlined word breakthroughs in Para.3 refer to?
①Launch in April. ②Use of the new battery.
③Changes in wind speed. ④Developments in technology.

A．①②④

B．①③④

C．①②③

D．②③④

【小题3】What can we infer from this passage?

A．This is the first space flight for the three astronauts.

B．More than 90 experiments will be carried out in space.

C．The astronauts will be able to keep any animal in space.

D．Astronauts may not need to take vegetables to space from the earth in the future.

【小题4】Which of the following can show the structure of this passage?

A．	B．
C．	D．