1. The fire-prevention system is ______ by any small increase in temperature.

• active
• activated
• acted
• acting

2. She was completely ______ because she was wearing a mask and sunglasses.

• recognize
• recognition
• recognizable
• unrecognizable

3. A laser beam consists of a ______ of pure light.

• concentrate
• concentration
• concentrative
• concentrating

4. Laser beams have been used for cancer ______.

• treat
• treatable
• untreatable
• treatment

5. To ______ in a job interview, you should arrive on time, be well-dressed, and keep ______ when answering the questions.

• successfully / calm
• successful / calmness
• success / calmly
• succeed / calm

6. Air pollution happens when wastes are poured into the atmosphere and the air becomes ______ and unpleasant to breathe.

• contaminate
• contamination
• contaminated
• contaminative

7. The practice of ______ is also known as farming.

• agriculture
• agricultural
• agriculturally
• agriculturalist

8. A (an) ______ home environment can affect a child' ______.

• happiness / behavioral
• happy / behave
• unhappiness / behave
• unhappy / behavior

9. Isaac Newton laid the ______ for many other discoveries in mathematics and physics.

• found
• founded
• founder
• foundation

10. The geneticists have discovered the laws of ______.

• inherit
• inheritance
• inheritor
• inheritable