Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

    Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic performance, and behavioral problems.

   This is not a new concern. As early as 1904, lead poisoning in children was linked to lead-based paint. Microscopic lead particles from paint are absorbed into the bloodstream when children ingest flakes of chipped paint,plaster,or paint dust from sanding. Lead can also enter the body through household dust, nailbiting, thumb sucking, or chewing on toys and other objects painted with lead-based paint. Although American paint companies today must comply with strict regulations regarding the amount of lead used in their paint, this source of lead poisoning is still the most common and most dangerous. Children living in older, dilapidated houses are particularly at risk.

Question: The phrase "exposed to" in line 2 could best be replaced by which of the following?

A. in contact with

B. familiar with

C. displaying

D. conducting

British families started going on holiday to the seaside around the middle of the 19th century. The invention of the railways made this possible. The first holidaymakers were quite rich and went for their health and education. The seaside was a place to be (1)__________of illnesses, and doctors recommended bathing in the sea and drinking sea water. Also to increase their knowledge, families attended concerts and read books from libraries.

At that time, ordinary working people had very little time (2)__________. However, in 1871, the government introduce four “Bank Holidays” – national holiday days. This allowed people to have a day or two out, which now and then gave them a taste for leisure and the seaside. At first they went on day-trips, taking(3)__________ of special cheap tickets on the railways. By the 1880s, rising incomes meant many ordinary workers and their families could have a week’s holiday at the seaside. Rail fares were reduced and cheap hotels were built to (4)__________ them. Holidaymakers enjoyed being idle, sitting on the beach, bathing in the sea, and eating ice-cream. Cheap entertainment was (5)__________ offer and holidaymakers went to have fun. Today, the English seaside remained popular, with more than 18 million holidays taken there each year.

Điền vào số 5

A. for

B. on

C. in

D. to