词汇与结构 Just as we reach liftoff speed, apply very slight backpressure on the control stick and move the ailerons to a ______ position.

Just as we reach liftoff speed, apply very slight backpressure on the control stick and move the ailerons to a____position. A: neutral B: up C: down D: takeoff

What type of writing is the written material 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.