Week10

 p49

B ⑴c ⑵e ⑶b ⑷d ⑸a

Critical thinking

Costa Rica : focus on safer farming of sanitary conditions

Sweden : focus on safer farming of thoroughly cleaning and rid dangerous bacteria.

Costa Rica: If they wash their hands frequently, there may retain bad bacteria.

Sweden: It needs a lot of money to heat chicken feed to rid it of dangerous bacteria.

p50

A ⑴ compulsory ⑵integral ⑶nationwide ⑷determined

    ⑸contaminated ⑹infection

B ⑴a ⑵b ⑶a ⑷b

C ⑴nation ⑵city ⑶world

p56

A ⑴b ⑵d ⑶a ⑷d ⑸a

B ⑴b ⑵d ⑶c