A、21 and a half hours B、31 and a half hours C、41 and a half hours D、51 and a half hours A

China’s second manned space flight will be conducted by two astronauts over a five-day period in 2005, China Daily reported on Tuesday. Exactly when Shenzhou-V flew with a single astronaut for 21 and a half hours a little more than a year ago. The next flight will carry two astronauts in space for five days, according to the newspaper. The capsule is designed such that it could orbit for a week , said scientists.