2. What are citizen scientists asked to do?
A) To develop a specific research interest and become professional scientists.
B) To send their research observations to a professional database.
C) To increase their knowledge about climate change.
D) To keep a record of their research observations.
3. In "All thats needed to become one... (paragraph 2) "， what does the word "one" stands for?
A) a citizen journalist. B) a citizen scientist. C) a scientist. D) a citizen.
4. What is NOT true of Project BudBurst?A) Only experts can participate in it. B) Everybody can participate in it.
C) It collects life cycle data on a variety of common plants. D) It has its own website.
5. What is the final purpose of Project BudBurst?
A) To study when plants will have their first buds.
B) To find out the types of plants in the neighborhood.
C) To collect life cycle data on a variety of common plants from across the
United States.D) To investigate how plants and animals will respond as the climate changes.
答案与题解：
1. C第一段和第二段的第一句告诉我们，要在世界范围内观察气候对大自然中生物生命周 期的影响，数量有限的科学家不可能足迹遍及天下，为此科学家求助于普通公民的参与 。 所以 C 是正确选择。
2. B第二段第三句中 encourage ordinary people to observe…的主语是 The citizen scientist movement，即公民参与科学观察的运动。所以 D 不是正确选择。A 和 C 不符 合文章的句意，因此也不是正确的选择。这个句子的大意是：这一运动鼓励普通公民根 据自己的兴趣爱好进行科学观察，并将观察结果送交数据库，让专门领域的科学家做进 一步的观察。B 正确表达了这个意思。
3. B one 在 这 里 是 一 个 代 词 ， 其 前 置 词 是 citizen scientists ， 而 不 是 citizen journalists，这里的 one 指的是 one of citizen scientists.所以 A、C 和 D 都不是 正确选择。这个句子的意思是，只要每天或每星期花上几分钟收集数据并发送出去，就 能成为一个公民科学家。4. A 文章最后一段说，这个计划向所有人开放(open to everyone)，所以应选择 A.B，C，D 所述内容都在该段中提到。
5. D C 表述的内容是 Project Budburst 所要做的工作，但其最终的目的不仅仅是收集数 据，而是研究气候变化对生物生命周期的影响。因此，D 才是正确答案。