听力原文:W: Is there anything else we ought to discuss?
M: We haven't discussed heating yet. Do you like central heating?
W: Yes, but isn't it rather expensive? First costs, I mean--the furnace, and the boiler, all the pipes and radiators?
M: That depends on the system. An automatically controlled oil-burning system is rather expensive.
W: Electric fires are no cheaper. We have them in the bedrooms, and the electricity bills are always high at the end of the winter.
M: What about open fires?
W: I like to see a fire. But coal fires do make a lot of work and a lot of dust, too.
M: You may have a furnace in the kitchen, and a storage tank upstairs. A furnace that bums coke is much cheaper than one that bums oil. A good one would give you all the hot water you need for the kitchen and for baths, and enough for two radiators in the living room.
W: Oh, I know what you mean. They have to be filled twice a day, don't they?
M: Yes, and you have to clear out the ashes once a day.
W: How much does coke cost?
M: They bum three or four tons a year. I'm not sure how much coke costs now--about £ 20 a ton, perhaps.
W: That's t £11.25 or more a week--for all the hot water, and for heating the living room in winter. That's cheaper than any other system I know.
M: And very little work, too.
W: Great, let's do it.
(20)
A.Electricity bills.
B.The cost of living.
C.The heating system.
D.Types of energy.
第1题
假定 int 类型变量占用两个字节,其有定义int x[10]={0,2,4};,则数组x在内存中所占字节数是
A.3
B.6
C.10
D.20
第2题
假定 int 类型变量占用两个字节,其有定义int x[10]={0,2,4};,则数组x在内存中所占字节数是
A.3
B.6
C.10
D.20
第3题
假定int类型变量占用两个字节,其有定义int x[10]={0,2,4};,则数组x在内存中所占字节数是()。
A.3
B.6
C.10
D.20
第4题
假定int类型变量占用两个字节,若有定义:int x[10]={0,2,4};则数组x在内存中所占字节数是()。
A.3
B.6
C.10
D.20
第5题
假定int类型变量占用两个字节,若有定义:int x[10]{0,2,4};,则数组x在内存中所占字节数是______。
A.3
B.6
C.10
D.20
第8题
假定int类型变量占用两个字节,有定义:int x[10]={0,2,4};,则数组x在内存中占字节数是
A.3
B.6
C.10
D.20
第10题
A.int a=5;int x [a];
B.const int a=5;int x [a];
C.int n=5;int*p=new int[a];
D.const int n = 5;int *p = new int[a];
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