Noise includes: ____________ noise, ____________ noise, ____________noise and ____________noise.

Not until midnight ______. A: did the noise stop B: the noise stopped C: the noise did stop D: stopped the noise

Knowing a word involves producing the word to express the meaning; producing the word in different contexts; producing synonyms and opposites for it; producing words that commonly occur with it. This concrete knowledge can be known as _____ .

The<br/>noise-producing construction site was condemned by teachers and<br/>students( ). A: likely B: alike C: identical D: unlike

Noise differs from sound in that ______. A: noise interferes with the task being done B: noise is a special type of loud sound C: noise is usually unavoidable in big cities D: noise can be defined more precisely than sound

Sunlight can be used to ______ electricity. A: producing B: be producing C: have produced D: produce

The firm_________ at producing computers

The firm at producing computers.

Exposure to high-pitched noise results in more errors than exposure to low-pitched noise

The machine was making __________. A: lot of noise B: lot of noises C: a lot of noise