Pertanyaan

1. The National Road,__________of the first highways in North America, connected the East Coast to the Ohio Valley. a. which one b. it was one c. one d. was one 2. Joseph Henry,___________first director of the Smithsonian Institute, was President Lincoln's advisor on scientific matters. a. the b. to be the c. was the d. as the 3. In physics, _______"plasma" refers to a gas which has a nearly equal number of positively and negatively charged particles. a. the term b. by the term c. is termed d. terming