根据所学知识回答下列问题．

（1）制作临时装片时，将盖玻片的一边先接触载玻片上的水滴，然后缓缓地放下，避免盖玻片下出现____ 

（2）使用显微镜时，如果光线较暗，用反光镜的____ （填“凹面”或“平面”）来对光．

（3）观察小鱼尾鳍内血液的流动时，显微镜视野中看到红细胞单行通过的血管是____ ．

（4）观察鸡卵的结构时，看到卵黄表面有一盘状的小白点，该结构称为____ ．

（5）制作酸奶需要利用的微生物是____ （填“酵母菌”或“乳酸菌”）．

（6）下列珍稀动植物中不是我国特有的是　____ 　（填字母）．

A．白鳍豚　　 　B．珙桐　　　C．朱鹮     D．藏羚羊．

目前有部分学生在做作业或考试时，喜欢使用修正液，经实验证明，修正液中含有多种挥发性  有害物质，吸入人体会引起头晕、头痛，严重者会呼吸困难，并抽搐，三氯乙烷( CH₃ CCl₃)就是其中一种成分。下面关于三氯乙烷的几种叙述正确的是（）

阅读理解

    April is Financial Literacy Month，when Americans of all ages are encouraged to learn how to be smart about money.And this year，fifth­grade Rachel Kelly from Naperville，Illinois，is already at the head of her class.Kelly,11, won a nationwide contest called the Stock Market Game.

    Students who take part in the Stock Market Game，run by the SIFMA Foundation，a financial­education organization，pretend to buy stocks (股票) worth $100,000.Then they have to read financial news over several days to see if their investments would have gained money or lost money and write an article explaining their choices.

    “I  wanted  to  choose  a  company  that was well­known，” writes Kelly.“I thought about products that I see every day，so cars came to my mind.” Kelly picked the Japanese car company Honda Motors.“Honda Motor Company is the No.1 producer of motorcycles in the world and the fifth­largest producer of automobiles behind Toyota，Volkswagen，General Motors and Hyundai，” says Kelly.

    Honda makes many different kinds of cars，which Kelly thinks makes the company a safe investment.She explains that even if the cost of gas goes up，Honda has a good chance of staying in business because of the company's fuel­efficient cars，which run on less gas than most cars made today.

    “If one of their departments is not doing so well，it won't affect the overall company sales，” she writes.

    Because the stock Kelly picked performed well and her article was persuasive，Kelly won this year's contest.About 600,000 students from 4th to 12th grade competed.