Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
Question 24: Polar bears and marine mammals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.
A.shrinking B. getting bigger C. melting D. getting warmer
Question 25: Portable digital projectors allow teachers to give interactive presentations without the use of the cumbrous equipment as before.
A.weighty B. manageable C. light D. portable