The ingredient of atmosphere does NOT include ______.

A．The Apollo spacecraft was the most complex machine ever assembled.
B．The liftoff team had been evacuated from the spot several hours before the operation.
C．Hundreds of engineers and technicians were involved in the operation.
D．If all this machinery worked perfectly the operation would succeed definitely.

A．It is a story told by one of the flight crew of Apollo 11.
B．It is a news report filed by a correspondent on the spot.
C．It is a diary written by a member of the liftoff team.
D．It is a written statement presented to NASA.