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【单选题】
考虑下述文法，S为开始符号 G1[S]：S→A A→aAb | ab G2[S] S→AA→aA |a| 下列结论中为真的是(28)。
A.
G1是LR(0)文法，G2不是LR(1)文法
B.
G2是LR(0)文法，G1不是LR(1)文法
C.
G2是LR(1)文法，G1不是LR(1)文法
D.
G1和G2都是LR(1)文法
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举一反三
【单选题】-- He was given a free five-day trip to Hainan. -- He _______ it since he has worked so hard.
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insists
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gets
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deserves
D.
receives
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【单选题】---- Has he finished the work? ---- Not really. _______ he worked all day, ______ he couldn’t finish the task.
A.
Although, yet
B.
As, yet
C.
Despite, but
D.
In spite of, still
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【简答题】党的以来,我国经济社会发展取得了历史性成就,但是,经济社会发展依然面临不少难题。 材料一区域之间发展不平衡,不同阶层、不同行业、不同区域间的收入差距还比较大,社会财富分配不够公平公正。全国还有几千万贫困人口没有摆脱贫困,群众在就业、教育、医疗、居住、养老等方面还有不少操心事、烦心事,面临不少难题。我国的收入分配结构正力争从哑铃型向橄榄型方向前进(如图所示)。 材料二我国的实体经济企业面临着成...
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【单选题】_____ to make a breakthrough in his career, he worked day and night in the company. [     ]
A.
Determined
B.
To have determined
C.
Have determined
D.
Having been determined
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【单选题】. He worked day and night, and therefore he _______ buy the sports car.
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could
B.
was able to
C.
might
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A.
in the way
B.
by the way
C.
on the way
D.
in this way
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【单选题】Tom says he wont forget the day______ we worked together and the day ______ we spent together.
A.
when; which
B.
what; that
C.
which; when
D.
on which; when
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相关题目：
【单选题】-- He was given a free five-day trip to Hainan. -- He _______ it since he has worked so hard.
A.
insists
B.
gets
C.
deserves
D.
receives
查看完整题目与答案
【单选题】犬,7 岁,雌性。近日发现饮欲增加,多尿。血常规检查 WBC 20×10^9 个/L,RBC 7.0×10^12 个/L,腹部 B 超检查见腹底部有条形液性暗区,加大增益可见暗区内低回声。该液性暗区发生于(2018真题上71题)
A.
卵巢
B.
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C.
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D.
膀胱
E.
肾
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【单选题】---- Has he finished the work? ---- Not really. _______ he worked all day, ______ he couldn’t finish the task.
A.
Although, yet
B.
As, yet
C.
Despite, but
D.
In spite of, still
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【单选题】_____ to make a breakthrough in his career, he worked day and night in the company. [     ]
A.
Determined
B.
To have determined
C.
Have determined
D.
Having been determined
查看完整题目与答案
【简答题】Once upon a time there was a farmer worked hard in the fields     1. every day. One day, while he was ploughing the fields, he heard a   2. bumping sound. He saw a rabbit lie by the trump. He picked i...
查看完整题目与答案
【单选题】. He worked day and night, and therefore he _______ buy the sports car.
A.
could
B.
was able to
C.
might
D.
would
查看完整题目与答案
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A.
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B.
③④
C.
②③
D.
①④
查看完整题目与答案
【单选题】— How did Jim pass the exam? —He worked day and night for two months. ______, he passed it.
A.
in the way
B.
by the way
C.
on the way
D.
in this way
查看完整题目与答案
【单选题】Tom says he wont forget the day______ we worked together and the day ______ we spent together.
A.
when; which
B.
what; that
C.
which; when
D.
on which; when
查看完整题目与答案
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