A．The increasing impact of global warming on US crops.
B．The positive impact of global warming on US crops.
C．The negative impact of global warming on US crops.
D．The dual impact of global warming on US crops.

A．It is not required that professional women should always wear suits.
B．It is acceptable for professional women to wear casual dress on some occasions.
C．Professional women should shift from pantsuits to skirt suits.
D．Professional women tend to dress more formally than professional men do.

A．To choose different garments to wear inside a suit.
B．To wear different ornaments that fit in with a suit.
C．To choose garments with unique buttons and lace trim.
D．To wear different shoes to match a suit.

A．There are some women who prefer casual clothes to formal ones on business occasions.
B．There are some women who refuse to wear formal clothes.
C．There are some women who are reluctant to wear formal clothes on business occasions.
D．There are some women who tend to adjust their dress in accordance with the working situation.

A．One's performance is judged by one's dress.
B．One who dresses well performs well.
C．One's dress may influence one's behaviour.
D．One should dress in an appropriate way.

A．Their cost drops so much that they cost less than TV commercials.
B．They attract more audience than TV commercials do.
C．They are tailored to a more specific audience than billboard does.
D．They will become the core of the new advertising medium.

A．It refers to such outdoor advertising as elevator advertising and billboards.
B．It is now less expensive and time-consuming than the traditional media.
C．It benefits a lot from technology advances.
D．It will become more and more popular as an advertising outlet.

A．Digital technology is being used to push advertising messages on high-definition video screens.
B．Thanks to new technologies, advertisers have easier access to potential consumers.
C．Wireless technology ran push advertising anywhere one wants.
D．Technology advances may cut the cost of installing screens.

A．their generation gap
B．their cultural clash
C．Luling's superstitions
D．Luling's disease

A．Amy Tan
B．Luling Young
C．a nursemaid
D．a ghostwriter