CONSERVATIONPRACTICE TEST 1A. PHONETICSI. PICK OUT THE WORD WHOSE UNDE...

45. A. which B. that C. in that D. whereII. Read the text and questions below. For each question, circle the letter you choose A, B, C or D. Carbon dioxide in the atmosphere, which is primarily a result of mankind's burning fuels, is thought to act like the glassof a greenhouse. It absorbs heat radiation from the earth and its atmosphere, the heat that otherwise would dissipateinto space. The possibility that the greenhouse effect could alter the earth's temperature has been debated for many years.Scientists have agreed that carbon dioxide is increasing but there has been uncertainty about whether temperatures arealso increasing. The major difficulty in accepting the greenhouse effect has been the absence of observed warmingcoincident with the historic carbon dioxide increase.