1. Cement was seldom used in building during the Middle Ages.
A) crudely
B) rarely
C) originally
D) symbolically
2. Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.
A) velocities
B) impulses
C) ratios
D) atrocities
1.B 2.A
A) crudely
B) rarely
C) originally
D) symbolically
2. Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.
A) velocities
B) impulses
C) ratios
D) atrocities
1.B 2.A

