By doing the "tank test", the engineers can find out() A: the amount of air in the plane B: the strength of the plane structure C: the pressure inside and outside the plane D: the power of the airplane engines

Let's go to Paris _____________. A: by plane B: by a plane C: a plane D: by the plane

Plane is to air pocket as______. () A: horse is to reins B: safety is to danger C: ground is to sky D: vehicle is to rut E: hangar is to airport

When taking a plane, if you are afraid of height, you can choose the aisle seat.

The first thing George did at the training school was （） A: to take an experienced pilot in a plane B: to be taken up into the air in a plane by an officer C: to fly a commercial plane D: to talk about his ideas