Saltyfoodmay________greatthreatto people'shealth.

A. expose
B. compose
C. pose
D. propose

Toomuchexposure________sunlightmightcause skindiseases.

A. in
B. on
C. to
D. under

Patientsshouldmakethe______oftheir doctor’svisits.

A. least
B. most
C. better
D. good

Astudyshowsthataircraftnoiseclearlyand significantly________people'shealth.

A. despairs
B. repairs
C. prepares
D. impairs

Thepatientisstrong-willedandnever________his hopetolive.

A. givesin
B. givesout
C. givesup
D. givesback

Bacteriaaswellasvirusandfungi________toskininfection.

A. contributes
B. contribute
C. is contributed
D. have contributed

Doctorshouldbe__________ofpatients'medication historybeforeprescription.

A. alert
B. aware
C. absent
D. acute

It_________cloudy,wedecidedtotakeumbrellawithus.

A. was
B. is
C. were
D. being

Itisrequestedthatyou_________abloodtestwithouteatingbreakfast.

A. take
B. will take
C. are taking
D. must take

Match the words in the left column with thewords in the right column to form certain expressions