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【简答题】
“Now I just don’t believe that.” Surely all of us, at some point, have watched a movie and thought: It’s simply badly researched, or, the makers must think we’re fools. If movies were completely scientifically accurate, they’d probably be as interesting as a Physics 101 lecture. In real life, there are no explosions in space, gas usually doesn’t explode from a lit cigarette, and Bruce Willis / Jackie Chan / Will Smith would most likely be in a coma(昏迷) after getting kicked in the head. Recently, the British newspaper The Daily Telegraph ran a humorous piece on unconvincing tech moments from some top movies. Let’s see what they are all about. Telegraph writer Tom Chivers’ first example is from the end-of-the-world movie Independence Day, in which a character comes up with a virus capable of destroying Windows, the computer system the alien(外星人的) spacecraft uses. “It’s a good thing they didn’t have Norton antivirus,” jokes Chivers. It’s just one case of a movie that takes a lot of license with its science. Another one Chivers mentions is from Star Wars, where glowing beams of light traveling through space look very impressive. The problem is that in space there are no air particles(颗粒) for the light to reflect off. In reality, they’d not be seen, which wouldn’t look so cool on the big screen. Chivers’ second piece of Star Wars nonsense is the sound the fighters make in the movies: “ the bellow(咆哮) of an elephant mixed with a car driving on a wet road”. But sound needs a medium to travel through, like air. In space, there wouldn’t actually be any sound at all. Few people would deny that the mind-bending Matrix films make for great viewing, but for Chivers, the science in the movies is a little silly. And finally: as Chivers points out, DAN is not replaceable. But this bit of elementary genetics passed the makers of the 2002 Bond film Die another Day by. In the film the villain(坏人) has “gene therapy” to change his appearance and his DNA, which is completely impossible. 小题1:What does the text mainly deal with? A.Plots of some famous movies. B.Characters in space movies. C.Popularity of space movies. D.Mistakes made in some movies. 小题2:From the first two paragraphs we can know that some movie makers ____. A.went against general knowledge of science B.didn’t pay attention to the viewers’ real demand C.overestimated viewers’ appreciation of movies. D.didn’t try their best to improve the quality of the movies. 小题3:What does the underlined word “they” in Paragraph 3 refer to? A.The newspapers. B.Unconvincing tech moments C.Some top movies. D.Heroes in the movies. 小题4:We can learn from Paragraph 7 that ____. A.most people like Matrix films B.the truth of Matrix films remains in doubt C.few people think Matrix films silly D.Chivers thinks science is unacceptable
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【单选题】反映水样中钙镁离子含量的水质指标是( )。
A.
硬度
B.
碱度
C.
色度
D.
浊度
E.
pH
【单选题】关于水的硬度的叙述中错误的是
A.
水的硬度是反映水质的重要指标之一
B.
水的硬度是指水中Ca2+、Mg2+离子的总量
C.
水的硬度最通用的测定方法是配位滴定法
D.
水的硬度是用每升水中所含Ca的毫克数来表示
E.
以上均不是
【单选题】关于水的硬度的叙述中错误的是:
A.
A . 水的硬度是反映水质的重要指标之一。
B.
水的硬度是指水中 Ca 2+ 、 Mg 2+ 离子的总量。
C.
水的硬度最通用的测定方法是配位滴定法。
D.
水的硬度是用每升水中所含 Ca 的毫克数来表示。
【简答题】设三事件A,B,C相互独立,且0<P(C)<1,则下述事件中不独立的是(    ) A. 与C   B.AC与 C. D.
【单选题】设随机事件A与B互不相容且相互独立,则min{P(A),P(B)}=( )。
A.
P(A)
B.
P(B)
C.
1
D.
0.5
E.
0
【单选题】设事件A与B相互独立,且P(A)>0,P(B)>0,则下列等式成立的是( )
A.
AB=
B.
P(A )=P(A)P( )
C.
P(B)=1-P(A)
D.
P(B | )=0
【单选题】已知A,B,C三事件中,A与B相互独立,且P(C)=0,则A,B,C三事件( ).
A.
相互独立
B.
两两独立,但不一定相互独立
C.
不一定两两独立
D.
一定不两两独立
【判断题】解聘是一种通过市场约束经营者的办法。(  )
A.
正确
B.
错误
【简答题】硬度是反映水中( )离子、( )离子含量的指标。(注:各填一个汉字)
【单选题】关于水的硬度的叙述中错误的是
A.
水的硬度是反映水质的重要指标之一
B.
水的硬度是指水中 Ca 2+ 、 Mg 2+ 离子的总量
C.
水的硬度最通用的测定方法是配位滴定法
D.
水的硬度是用每升水中所含 Ca 的毫克数来表示
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