4. He does not _______as a teacher of English as his pronunciation is terrible .
A.equal
B.match
C.qualify
D.fit
參考答案：C
解析：正確答案選C。(A) equal作動詞用時意為"等于，比得上"。(B)match："與……相匹敵，使較量"。(C)qualify："有資格"。(D)fit："使合適，使符合"。根據句意，應選(C)qualify。全句的意思是：他當英文教師不夠資格，因為他的發(fā)音糟透了。
5. Dozens of scientific groups all over the world have been _______the goal of a practical and economic way to use sunlight to split water molecules.
A.pursuing
B.chasing
C.reaching
D.winning
參考答案：A
解析：正確答案選A。goal只與四個備選答案中的(A)pursuing："追求，尋求"和(C)reaching"達到"相搭配，故(B)chasing："追逐"和(D)winning："贏得"應立即排除。由于(C)reaching (the goal)指已達到的目標，實際上句中所說的"利用太陽光分裂水分子"的方法仍在摸索中，尚未變成現實，故(C)也應排除。(A)pursuing指正在"尋求"達到上述目標的方法，符合句意，故(A)為正確答案。
6. The discussion was so prolonged and exhausting that _______the speakers stopped for refreshments .
A.at large
B.at intervals
C.at ease
D.at random轉自學易網 www.studyez.com
參考答案：B
解析：正確答案選B。(A) at large："自由行動，消遙自在地"。(B)at intervals："不時，時時"。(C)at ease："不緊張，自由自在"。(D)at random："隨便，隨機的，隨意的"。根據句意應填(B)。全句的意思是：講座會開得那么冗長使人精疲力盡，致使發(fā)言的人不時停下來喝點飲料。refreshments也可作"點心"解。
A.equal
B.match
C.qualify
D.fit
參考答案：C
解析：正確答案選C。(A) equal作動詞用時意為"等于，比得上"。(B)match："與……相匹敵，使較量"。(C)qualify："有資格"。(D)fit："使合適，使符合"。根據句意，應選(C)qualify。全句的意思是：他當英文教師不夠資格，因為他的發(fā)音糟透了。
5. Dozens of scientific groups all over the world have been _______the goal of a practical and economic way to use sunlight to split water molecules.
A.pursuing
B.chasing
C.reaching
D.winning
參考答案：A
解析：正確答案選A。goal只與四個備選答案中的(A)pursuing："追求，尋求"和(C)reaching"達到"相搭配，故(B)chasing："追逐"和(D)winning："贏得"應立即排除。由于(C)reaching (the goal)指已達到的目標，實際上句中所說的"利用太陽光分裂水分子"的方法仍在摸索中，尚未變成現實，故(C)也應排除。(A)pursuing指正在"尋求"達到上述目標的方法，符合句意，故(A)為正確答案。
6. The discussion was so prolonged and exhausting that _______the speakers stopped for refreshments .
A.at large
B.at intervals
C.at ease
D.at random轉自學易網 www.studyez.com
參考答案：B
解析：正確答案選B。(A) at large："自由行動，消遙自在地"。(B)at intervals："不時，時時"。(C)at ease："不緊張，自由自在"。(D)at random："隨便，隨機的，隨意的"。根據句意應填(B)。全句的意思是：講座會開得那么冗長使人精疲力盡，致使發(fā)言的人不時停下來喝點飲料。refreshments也可作"點心"解。