装盘时，先上桌的物品在上、在前，后上桌的物品在下、在后。
查看答案
所托物品要避开自己的鼻口部位。端托中需要讲话时，应将托盘托至身体的左外侧，避开自己的正前位。
A. 对
B. 错
The word corona in Latin means________.
A. spiked
B. jagged
C. crown
D. protein
Although there are hundreds of coronaviruses, only ________currently infect humans.
A. ten
B. seven
C. five
D. four
Why do we need a new flu vaccine every year?
A. Influenza mutates quickly and new strains result
B. Our bodies rid themselves of the vaccine yearly
C. When it gets warm outside, vaccines do not work anymore
D. Cooler temps often cause vaccines to mutate and not be effective
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