In the passage, the author is primarily concerned with______.A．advocacy of new attitudes t

This passage is mainly about ______.

A) the definition of bacteria

B) health germs

C) probiotics

D) probiotics versus antibiotics

We learn from the passage,all English dictionaries include ______ .

A．legends

B．mythology

C．word origins

D．word definitions

A.compass

B.passage

C.message

D.progress

In this passage, the word attain means ______.

A. see

B. push

C. bury

D. reach