在CO、HCOOH、OHC-COOH的混合物中，H%=y，则C%为（ ）
A．
（1-9y）3 7
B．6(1-y) 7
C．
（1-6y）3 7
D．1-y 7
如果把HCOOH的组成表示为CO•H2O、OHC-COOH的组成表示为2CO•H2O，那么整个混合气体则由CO和H2O组成；氢元素的质量分数为y，则混合物中水的质量分数=
=9y；因此，混合物中CO质量分数为1-9y，则混合物中C元素的质量分数=（1-9y）×y
×100%2 18
×100%=12 28
（1-9y）．3 7
故选：A．
One day a wise man was walking along the beach when he saw a young man far away picking up something and very gently throwing it into the sea. As he got (31) he called out to the young man, “Good morning! What are you doing?” The young man (32), looked up and replied, “Throwing starfishes into the sea.” “Why are you throwing starfishes into the sea?” “The sun is up and the (33) is going away. And if I don’t throw them in they’ll (34).” “But, young man, don’t you (35) that there are miles and miles of beach and starfishes all along it. You can’t (36) make a difference!” The young man (37) politely. Then he picked another starfish and threw it into the sea, and said, “It made a difference for that (38).” There is something very (39) in each and every one of us. We have all been given the ability to make a difference to shape the future. We must each find our own starfish. And if we throw our starfish wisely and well, the (40) will be better.
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眼位的检查方法有：________、________、交替遮盖法。
读湖北省图，回答下列问题。
②连接湖北和A省行政中心的铁路名称是_______，经过湖北和E省的铁路是_______。
③图中阴影地区是_______自治州。该州正在修建的两大工程是_______铁路和_______高速公路。该州的地形主要是以_______为主，居住的少数民族主要是 _______和_______。
阅读理解
A British train station has put up a no kissing sign to stop lovers going full steam ahead with their
overamorous farewells.
Commuters have been told:if you want to get up to that kind of business,do it in the car park.
The sign has been put up at the dropoff point (落客处) at Warrington Bank Quay station in the town
of Warrington,between Liverpool and Manchester in northwest England.
A similar sign,this time permitting kissing,has been put up elsewhere in a zone where kissing is
considered tolerable.
"We have not banned kissing in the station," said a spokesman for operators Virgin Rail.
"But we have put the sign up at the dropoff point because it is not a very big area and it often gets
busy.The sign is a lighthearted way of reminding people to move on quickly.If people wish to spend a
little more time with their loved ones before they leave,then they should park in the shortstay car park
nearby."
The busy station links the town with the major cities London,Birmingham,Glasgow,Edinburgh,
Liverpool and Manchester.
However,one station is trying to rescue love from the tracks.High Wycombe,northwest of London,
is having none of it and is actively urging commuters to show their emotions in public.
"Kissing is welcome here!...we would never dream of banning kissing," says a poster of a cartoon
couple embracing,framed by a pink heart."Railway stations are romantic places," insisted Kirsteen
Robertson from Chiltern Railways."They are where fond farewells and emotional reunions take place,
where relationships start with a glance and even,in the case of our Marylebone station last November
where one passenger will propose (求婚) to another over the public address system."
"So our passengers are more than welcome to share a kiss in our stations."
1. The train station has put up a no kissing sign in order to________.
A. ban kissing in the station
B. get passengers to walk quickly
C. avoid embarrassment
D. prevent illegal practice
2. The underlined word "it" here refers to________.
A. rescuing love from the tracks
B. banning kissing in the station
C. kissing at the dropoff point
D. kissing in the car park
3. We learn that in High Wycombe________.
A. kissing is encouraged
B. kissing is forbidden
C. kissing is intolerable
D. kissing is limited to a certain time
4. We can infer that________.
A. the dropoff point is not a safe place
B. the dropoff point is a quiet place
C. the dropoff point is a romantic place
D. the dropoff point is often packed with the traffic and passengers
在实测流量中，何种情况下用面积包围法计算相应水位？
