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【简答题】
阅读短文,选择正确答案。 My little brother is six years old, in first grade. Yesterday, he gave mum a letter from his teacher. 'I got a red flag (红旗) today. Could you please sign this note?' he said. The note showed that he had been talking during reading time. He gets a 'red flag' Only once in a while. His real worry is that he hardly ever gets top scores in his school work. The best he gets is 'OK' but often his score is 'You can do better than this'. My mum tells me 'You can do better than this' would mean 'Very bad' in China. It's interesting, though, because teachers for little kids in America never say anything too bad about their students; even if the students are making trouble in class or not working bard enough. The worst they might say is 'Please be nicer tomorrow'. Many parents are pleased with a B-grade for each subject. I've heard that things are different in Chinese schools. Expectations (期望) are very high for students. Even from first grade, homework was quite a lot for my relatives in Nanjing. I sometimes felt that my first-grade Chinese cousin spent more time on homework than I did when I was a 6th grader in the US (this is the same as the 6th grade in China)! Yet his parents thought he was a bad student. But to me, he was smart, even though he didn't meet his parents' expectations. My parents tell me that some students who live in China before coming to this country are years earlier in maths and science! Do you think it's too strict in China? Or do you think that it's not strict enough in America? Maybe both are true! 1. The writer's little brother got a red flag yesterday because he _______. [     ] A. did something good B. worked hard enough C. got top scores D. made trouble class 2. When students get, 'OK' it means they get ______ scores in their schoolwork. [     ] A. top B. medium C. lowest D. the best 3. Many parents in America don't get _______ when their kids get a B-grade in their school. [     ] A. happy B. glad C. angry D. pleased 4. From the passage we can clearly see the writer thinks _______. [     ] A. American-teachers are better than Chinese teachers B. expectations in China are too high for students C. teachers should be strict with students D. Chinese teachers are not kind enough to students 5. The story mainly tells us _______. [     ] A. about the different expectations between China and America B. Chinese kids spend more time on schoolwork than American kids do C. it s not strict enough in American schools D. Chinese teachers should treat
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【单选题】下表为4种常见溶液中溶质的质量分数和物质的量浓度.这4种溶液中密度最大的是
A.
HCl
B.
NaOH
C.
CH 3 COOH
D.
HNO 3 溶质溶质的质量分数/% 36.5 40 60 63 物质的量浓度/mol·L ­1 11.8 14.3 10.6 13.8
【判断题】实验动物分为四级,主要有:普通级、特殊级、清洁级、无特定病原体( SPF)。
A.
正确
B.
错误
【简答题】简述企业人力资源规划的作用。P48
【单选题】52 g铜镁合金完全溶解于50 mL密度为1.40 g/mL、质量分数为63%的浓硝酸中,得到NO 2 和N 2 O 4 的混合气体1120 mL(标准状况)。向反应后的溶液中加入1.0 mol/L NaOH溶液,当金属离子全部沉淀时,得到2.54 g沉淀。下列说法不正确的是
A.
该合金中铜与镁的物质的量之比是21
B.
该浓硝酸中HNO 3 的物质的量浓度是14.0 mol/L
C.
得到2.54 g沉淀时,加入NaOH溶液的体积是600 mL
D.
NO 2 和N 2 O 4 的混合气体中,NO 2 的体积分数是80%
【单选题】下表为4种常见溶液中溶质的质量分数和物质的量浓度: 溶     质 HCl NaOH CH 3 COOH HNO 3 溶质的质量分数/% 36.5 40 60 63 物质的量浓度/mol?L -1 11.8 14.3 10.6 13.8 这4种溶液中密度最小的是(  )
A.
HCl
B.
NaOH
C.
CH 3 COOH
D.
HNO 3
【单选题】为了形成路由表,有一种协议需要通过计算先得到一个SPF树。这种协议可能为
A.
RIP
B.
OSPF
C.
TCP
D.
IP
【简答题】下表为四种溶液的溶质质量分数和物质的量浓度的数值,根据表中数据判断四种溶液中密度最小的是 溶液 KOH HNO 3 CH 3 COOH HCl 溶质质量分数w(%) 56 63 60 36.5 物质的量浓度c(mol·L -1 ) 14.3 13.8 10.6 11.8 A.HCl          B.HNO 3 C.CH 3 COOH         D.KOH
【单选题】以下提供 GPU 芯片的中国公司是
A.
谷歌
B.
英特尔
C.
英伟达
D.
景嘉微
【单选题】52g 铜镁合金完全溶解于 50mL 密度为 1.40g/mL 、质量分数为 63% 的浓硝酸中,得到 NO 2 和 N 2 O 4 的混合气体 1120mL ( 标准状况 ) ,向反应后的溶液中加入 1.0mol/LNaOH 溶液 , 当金属离子全部沉淀时,得到 2.54g 沉淀,下列说法不正确的是 ( )
A.
该合金中铜与镁的物质的量之比是 2 ︰ 1
B.
该浓硝酸中 HNO 3 的物质的量浓度是 14.0mol/L
C.
NO 2 和 N 2 O 4 的混合气体中, NO 2 的体积分数是 80%
D.
得到 2.54 沉淀时,加入 NaOH 溶液的体积是 600mL
【判断题】实验动物分为四级,主要有:普通级、特殊级、清洁级、无特定病原体(SPF)级。
A.
正确
B.
错误
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