(Q).
By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.  Having read the above passage, choose the right answer to the following question (choices are higher or lower ):   David is getting ready to fly into space on a rocket. As the rocket shoots upwards, part of the mass falls away, allowing the rocket to go higher or lower?
(A).
higher


(Q).
As the amount of water increases, the melting point of rock decreases.  Having read the above passage, choose the right answer to the following question (choices are high melting point or low melting point ):   Rocks that have no water in them have a high melting point or low melting point?
(A).
high melting point


(Q).
The voice becomes deeper as the larynx in the throat grows larger.  Having read the above passage, choose the right answer to the following question (choices are High or low ):   A person that has a small larynx will have what type of voice High or low?
(A).
High