As can be probably perceived, a manned trip to Mars may soon ________ since scientists have achieved the manned moon mission.

Jiaolong is the first operational deep-sea manned submersible designed independently in China. It is the most capable operational manned submersible in the world at present.

Shenzhou X mission is China’s sixth manned mission. It is also the longest manned mission in China, with a total flight time of 33 days.

In 2012， Jiaolong manned submersible made a 7000 meter sea trial。 Before that， only the US， France and Russia had manned deep submarines in the world。（ ）

As can be perceived, a manned trip to Mars may soon _____ since scientists have achieved the manned moon mission. A: proceed B: sensible C: commence D: resent

Shenzhou V was the first manned spacecraft developed _____________ by China.

As can be probably perceived, a manned trip to Mars may soon _____since scientists have achieved the manned moon mission. A: chat B: commence C: confess D: commit

As can be probably perceived, a manned trip to Mars may soon ( ) since scientists have achieved the manned moon mission. A: commence B: tempting C: coordinate D: lodge

What is the fact of NASA’s manned space exploration program?

When did the first manned spacecraft leave earth for the moon