单项选择题

"Viruses waiting for a disease" refers to ______.

A．those viruses carried in the blood of animals
B．some viruses which are at present harmless to man
C．the viruses that reproduce in man without making him ill
D．the still-not-yet-discovered viruses in the jungle

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热门试题

单项选择题

When the author cited the Brazilian legend he was ______.

A．trying to add a little humor
B．trying to illustrate his earlier point
C．simply joking
D．being religious

单项选择题

Reebok’s view that consumers judge the quality of the brand by the quality of its distribution ( Lines 4, Par

A．2) implies that ______.A. the quality of a brand is measured by the service quality of the store selling itB. the quality of a product determines the quality of its distributorsC. the. popularity of a brand is determined by the stores that sell itD. consumers believe that first-rate products are only sold by high-quality stores