单项选择题

What is the main theme of the following passage

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.

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单项选择题

Which statement is NOT suggested about professional women's dress in the era of casual business dress

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.

单项选择题

According to the passage, what is the best way to change a professional woman's dressing style

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.