--- Has Mary come back yet?

--- Yes. She has got many books from her elder schoolmates, and the number  ___ 1000.

A．adds up

B．adds up to

C．add to

D．add up to

During the process of loading, damages to cargo can be reduced to minimum by（）.

A.shippers who deliver the cargo to the ship on time

B.stevedores who handle the cargo with caution

C.ship's crew members who check the cargo in regular intervals

D.consig ees who take goo care of the cargo