1. A panda’s primary activity is sleep, _____ its waking hours looking for food.

2. One of the oldest types of aesthetic theory is that of formism, _____ .

3. Although _____ rigid, bones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact.

4. An Olympic marathon is 26 miles and 385 yards, approximately _____ from Marathon to Athens.

5. Hot objects emit _____ do cold objects.

6. In so-called nonfiction novels, a documentary style is combined with fictional techniques _____actual events and people.

7. A television camera produces an image by convening _____ receives into a series of bright and dark dots.

8. The second-oldest continuously occupied governor’s mansion in the United States _____ Jackson, Mississippi.

9. The fluoroscope makes _____ for medical doctors to view a silhouette of the bones and internal organs of a patient’s body.

10. The chemical facts _____ as a by-product of their search for gold became the basis for modem chemistry

11. _____ is not clear to researchers.

12. Stars shine because of _______ produced by the nuclear reactions taking place within them.

13. In ______ people, the areas of the brain that control speech are located in the left hemisphere.

14. Just as remote-controlled satellites can be employed to explore outer space, _______employed to investigate the deep sea.

15. From 1949 onward, the artist Georgia O’ Keeffe made New Mexico ______.