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【简答题】
下面( )的情况下不会产生外部性。 A. 企业向空气中排放污染物; B. 家庭主妇铲掉自家门口的雪; C. 在一个人的封闭环境里吸烟; D. 养蜂人的蜜蜂给邻居的果树授粉。
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举一反三
【单选题】.We tried to find___________from the storm , and we saw a tall tree , we took shelter under it .
A.
cover
B.
storage
C.
attraction
D.
production
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【单选题】若有说明:int *pl,*p2,m=5,n;,以下均是正确赋值语句的选项是( )
A.
p1=&m;p2=&p1;
B.
p1=&m;p2=&n;*p1=*p2;
C.
p1=&m;p2=p1;
D.
p1=&m;*p2=*p1;
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【单选题】We _________ the girl last Monday. [     ]
A.
 see
B.
 sees
C.
 saw
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【单选题】合成对乙酰氨基酚时，加入亚硫酸氢钠的作用是（ ）。
A.
加快反应速度
B.
B防止产品被还原
C.
C提高酰化剂的选择性
D.
D减少副反应发生
E.
E防止产品被氧化
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【单选题】SELECT语句中必选的子句是（）。
A.
SELECT…FROM
B.
SELECT…FROM…WHERE
C.
SELECT…FROM…ORDER
D.
SELECT
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【简答题】Everywhere we look, there is the color.  We see it in the sky and in the sea, There is the color in rocks and in all plants and animals. The color makes our homes and schools pretty. We even see the c...
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【单选题】Awarded ______ 2012 Nobel Prize in Literature, Mo Yan, ______ productive contemporary Chinese writer, has published dozens of short stories related to the countryside.
A.
a; a
B.
the; a
C.
不填; a
D.
a; the
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【单选题】When we complete each step of our goals ,______.
A.
we will win final success
B.
we are overwhelmed
C.
we should build up confidence of success
D.
we should have strong desire for setting new goals
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【单选题】---Excuse me, is there ________ book by Mo Yan? ---Yes. It’s on _________ bookshelf over there.
A.
a; /
B.
a; the
C.
/; the
D.
the; a
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【简答题】On turning the corner, we saw the road _____ steeply. A. departing    B. decreasing    C.descending    D. depressing
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【单选题】.We tried to find___________from the storm , and we saw a tall tree , we took shelter under it .
A.
cover
B.
storage
C.
attraction
D.
production
查看完整题目与答案
【单选题】若有说明:int *pl,*p2,m=5,n;,以下均是正确赋值语句的选项是( )
A.
p1=&m;p2=&p1;
B.
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【单选题】We _________ the girl last Monday. [     ]
A.
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【单选题】合成对乙酰氨基酚时，加入亚硫酸氢钠的作用是（ ）。
A.
加快反应速度
B.
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D.
D减少副反应发生
E.
E防止产品被氧化
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【单选题】SELECT语句中必选的子句是（）。
A.
SELECT…FROM
B.
SELECT…FROM…WHERE
C.
SELECT…FROM…ORDER
D.
SELECT
查看完整题目与答案
【简答题】Everywhere we look, there is the color.  We see it in the sky and in the sea, There is the color in rocks and in all plants and animals. The color makes our homes and schools pretty. We even see the c...
查看完整题目与答案
【单选题】Awarded ______ 2012 Nobel Prize in Literature, Mo Yan, ______ productive contemporary Chinese writer, has published dozens of short stories related to the countryside.
A.
a; a
B.
the; a
C.
不填; a
D.
a; the
查看完整题目与答案
【单选题】When we complete each step of our goals ,______.
A.
we will win final success
B.
we are overwhelmed
C.
we should build up confidence of success
D.
we should have strong desire for setting new goals
查看完整题目与答案
【单选题】---Excuse me, is there ________ book by Mo Yan? ---Yes. It’s on _________ bookshelf over there.
A.
a; /
B.
a; the
C.
/; the
D.
the; a
查看完整题目与答案
【简答题】On turning the corner, we saw the road _____ steeply. A. departing    B. decreasing    C.descending    D. depressing
查看完整题目与答案