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问题 单项选择题

OpenGL程序库支持的图形是

A．一维

B．二维

C．三维

D．四维

答案

参考答案：C

解析：【解析】OpenGL是支持计算机三维图形的程序库。OpenGL独立于硬件，独立于窗口系统。

单项选择题

I was reading Shirley Hazzard’s novel The Transit of Venus. Though I (51) her other books, I had always resisted this one. It (52) me as too pure somehow, too heroic, larger or finer than life and therefore unreal. But now I read it with an almost (53) pleasure. There were sentences that (54) of gratification to my eyes and (55) the hairs on the nape of my neck. I was in a Boston hospital, propped tip in bed with a feeding tube in my arm after (56) surgery for cancer. It was

(57) double room and my roommate, who (58) when he spoke because he had both a broken chin and a drug habit was spraying the air for the fourth or fifth time that day with (59) had a television set and a radio going (60) . The diagnosis of my case was ambiguous. When I asked the doctor the usual question-How much time have I got—he hesitated before answering. "I would say," he said, "that you have in the neighborhood of years.\

57().

A.a 

B.an 

C.the 

D.these
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选择题

下列说法正确的是

A．H2S的水溶液中，c(H+)与c(S2—) 之比为2：1

B．( NH4)2SO4溶液中c(NH4+)与c(SO42—) 之比为2：1

C．一定温度下，将SO3 (g)放入密闭容器中反应达到平衡后，n(SO2)与n(O2) 比为2：1

D．相同温度下，1mol/L的醋酸溶液与0.5mol/L醋酸溶液中c(H+)之比为2：1
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