【題組】47. How can humid settings help opera singers achieve the right pitch?(A) Singers have more elas
【題組】49. Which of the following locations can be inferred to develop fewer tonal languages?(A) Desert
【題組】50. Which word has the closest meaning to the underlined word “bolster”?(A) Explore(B) Support(C
1. That child’s bad behavior is a clear indication of a lack of _____.(A) discipline (B) display (C)
3. A _____ is an animal that gets nutrients from dead animals that it did not hunt or kill.(A)predat
4. Which statement is not true about environmental change?(A)It affects the organisms that live in t
5. All are functions of a wetland except _____.(A)erosion control (C)water filters((B)flood protecti
6. Which can change a rock into a metamorphic rock?(A)compaction and cementation (C)weathering and e
___ 7. Glass has a hardness of 5.5. According to the table, which could glass scratch? (A)topaz (C)f
____ 9. The gravitational pull between Earth and _____ causes tides.(A)the Sun (C)the Moon((B)Mercur
12. How do the reactants and products compare in a chemical reaction?(A)The reactants have more mass
13. Which process involves splitting a nucleus into two or more pieces?(A)radioactive tracing (C)nuc
14. Which measures the average kinetic energy of the molecules in a material?(A)temperature (C)heat(
15. A rock falls from a cliff. The table shows the speed and acceleration of the rock at different t
16. A windmill harnesses the power of _____. (A)electrical energy that can be converted into heat en
18. The conversion of one form of energy into another is called _____.(A)thermal transformation (C)e