21It seems that living green is（）easy and fordable. A small step masks a big difference.
A.exactly
B.fortunately
C.surprisingly
D.hardly
开始考试练习点击查看答案22As there is less and less coal and oil, scientists are exploring new ways of making use of（）energy, such as sunlight, wind and water for power and fuel.
A.primary
B.Alternative
C.instant
D.unique
开始考试练习点击查看答案23After the long journey, the three of them went back home,
A.hungry and tiredly
B.hungry and tired
C.hungrily and tiredly
D.hungrily and tired
开始考试练习点击查看答案24My brother is really（）.He often works in his office far into the night.
A.Open—minded
B.hard—working
C.self—confident
D.warm—hearted
开始考试练习点击查看答案25At the railway station, the mother waved goodbye to her daughter until the train was.
A.out of sight
B.out of reach
C.out of order
D.out of place
开始考试练习点击查看答案26In those days, our（）concern was to provide people who were stopped by the snow storm with food and health care.
A.normal
B.constant
C.permanent
D.primary
开始考试练习点击查看答案27As he works in a remote area, he visits his parents only（）.
A.occasionally
B.anxiously
C.practically
D.urgently
开始考试练习点击查看答案28Last night Mr.Crook didn't come back at the usual time（）he met some friends and stayed out until midnight.
A.Meanwhile
B.However
C.Instead
D.Yet
开始考试练习点击查看答案29——Do you need any help, Lucy?——Yes.The job is（） I could do myself.
A.less than
B.more than
C.no more than
D.not more than
开始考试练习点击查看答案30（）and happy, Tony stood up and accepted the prize.
A.Surprising
B.Surprised
C.Being surprised
D.To be surprising
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