【選出與視頻中意思一樣的句子】
A. There are millions of bacteria in our bodies and millions more of our own cells, but most of the bacteria have either no effect or are helpful. e.g. in processing food or countering other, harmful microbes.
B. There are millions more bacteria in our bodies than there are our own cells, but most have either a neutral or a positive effect on us, such as processing food or counteracting other harmful microbes.
原句：
Although you have 10 times more bacterial cells inside you than your body has human cells. Many of these bacteria are harmless or even beneficial, helping digestion and immunity.
答案：B
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