a well-developed system of law.
D
17. Altitude, climate, temperature, and the length of the growing season both
A B C
determine Where plants will grow.
D
18. The bathyscaphe, a free-moving vessel designed for underwater exploration,
A
consists of a Flotation compartment with a observation capsule attached underneath it.
B C D
19. Water constitutes almost 96 percent of the body weight of a jellyfish, so if
A B
a jellyfish were to dry out in the sun, it would virtually disappeared.
C D
20. The most important parameters affecting a rocket's maximum flight
A
velocity is the relationship between the vehicle's mass and the amount
B C
of propellant it can carry.
D
21.There were once only eight major lakes or reservoirs in Texas, but |
