According to the second and third paragraphs, which of the following is NOT true about the

ph?

A．Old losers.

B．Junkies.

C．Vagabonds.

D．Bag ladies.

Which of the following adjectives does NOT describe Lettys room?

A．Snug.

B．Filthy.

C．Narrow.

D．Crude.

The main purpose of the passage is to______.

A．introduce the dangers of air-conditioning

B．explain the defects of old air-conditioning

C．illustrate how air-conditioning affects people"s health

D．advocate abandoning old air-conditioning

t______.

A．much exposure may make people feel annoyed

B．harmful chemicals in the ventilation system may cause cancers

C．much exposure to low temperature may cause immune diseases

D．people may suffer from headache in an air-conditioned office

A．Chemical disinfectants.

B．Bacteria.

C．Fungi.

D．Pentachlorophenol.

The word "inadvertently" in the fourth paragraph probably means______.

A．intentionally

B．indeliberately

C．definitely

D．imminently

Bacteria came into a ventilation system when______.

A．cool air was sucked into it

B．warm air was sucked back

C．cool air was sucked back

D．warm air was sucked into it

A suitable title for the passage might be______.

A．A Man Talking to Plumbing

B．Putting Weapons on Cockroaches

C．Modern Technology

D．Cannons, Cell Phones and Zippers

Which of the following is INCORRECT of the story mentioned in the last paragraph?

A．It is imaginary.

B．It is a warning.

C．It is a science fiction.

D．It is set in California.

h paragraph is to______.

A．support the author"s opinion in the previous part

B．elicit the author"s opinion in the following paragraph

C．verify the trueness of the author"s statement

D．refute other people"s sympathy for the man