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【简答题】
What can you do on the Internet? Many of us like to read the news, buy things and play games. Some students now have a new use for the Internet – helping them with their homework. Tina, 14, from Shenzhen, Guangdong, often searches online for the answers to her math problems. She said sometimes she and even her parents don’t know the answers to the problems, so she has to turn to the Internet. “I can see how other people work out these problems and learn from them,” Tina said. “It’s easy and saves time.” But not all the students welcome this. Leo, 15, from Hangzhou, Zhejiang, thinks it may make students stop thinking. “We should think over the problems first. Simply copying the answers won’t improve our abilities. ” he said. In the eyes of Wang Zhaoming, a Shanghai teacher, the success of all this is down to the students. If they use the Internet properly (适当地), it could be a good tool for study, Wang said. “Students should first think about the problems by themselves. As for the online answers, they should choose the best among different ones. The most important thing is to know the logic (逻辑) behind the answers,” he said. “Don’t be shy to ask teachers and classmates the next day if you don’t understand the answer.” 小题1:According to the passage, it’s a new use for students to ___________ on the Internet. A.buy things B.play games C.help with homework D.read news 小题2:The right order to use the Internet to help with our homework is ____________. ① Choose the best answers among different answers online; ② Search the answers on the Internet; ③ Think about the problems by ourselves; ④ Try to understand the logic behind the answer you’ve chosen. A.①②③④ B.③②①④ C.②③①④ D.④③②① 小题3:In Leo’s opinion, searching online for the answers may _______________. A.make students simply copy the answers instead of thinking B.help solve the problems between students and their parents C.be a good tool of study if students use the Internet properly D.improve the students’ different abilities 小题4:The best title of this passage is_____________. A.How to use the Internet B.Think before you search online C.Is Internet bad or good for students D.Computers or teachers
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【单选题】汽车交流发电机装配电压调节器后,具有()。
A.
限制自身最大输出电流的性能
B.
限制自身最大输出电压的性能
C.
同时限制最大输出电流和最大输出电压的性能
D.
控制励磁电流保持输出电压恒定不变的性能
【简答题】125×(7×8) 25×(7+4) 50×25×4×20 85×67 58×41-58.
【单选题】APOAⅠ主要存在于
A.
HDL
B.
LDL
C.
IDL
D.
VLDL
E.
CM
【单选题】二元函数 在点 处可导(指偏导数存在)与可微的关系为 .
A.
可微必可导
B.
可导一定不可微
C.
可导必可微
D.
可微不一定可导。
【多选题】关于期现套利交易,下列说法正确的有______。
A.
期现套利有助于形成期货市场和现货市场之间的合理价格关系
B.
当期货和现货市场的价差过大时,交易者可在两个市场之间进行价差套利而获利
C.
当期货价格明显高于现货价格时,套利者可以通过买进现货同时卖出相关期货合约,待合约到期,以所买入的现货进行交割而获利
D.
期现套利是价差套利的一种形式
【单选题】ApoAⅠ主要存在于
A.
LDL
B.
VLDL
C.
HDL
D.
CM
E.
血浆
【单选题】二元函数 在点 处可导(指偏导数存在)与可微的关系是( )。
A.
可导必可微;
B.
可导不一定可微;
C.
可微必可导;
D.
可微不一定可导
【单选题】下列式子应用了乘法结合律的是 [     ]
A.
25×7=7×25
B.
7×25×4=7×(25×4)
C.
(25+7)×4=25×4+7×4
【单选题】汽车交流发电机装配电压调节器后,具有()。
A.
控制励磁电流保持输出电压恒定不变的性能
B.
限制自身最大输出电流的性能
C.
同时限制最大输出电流和最大输出电压的性能
D.
限制自身最大输出电压的性能
【单选题】汽车交流发电机装配电压调节器后,具有
A.
同时限制最大输出电流和最大输出电压的性能
B.
控制励磁电流保持恒定不变的性能。
C.
限制自身最大输出电压的性能
D.
限制自身最大输出电流的性能。
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