2 . I often cycle through the countryside         it’s good for my health.

A．unless

B．because

C．although

D．while

4 . — Which color shirt would you choose, purple or white?
—         , in case I need a change.

A．None

B．Both

C．Either

D．Neither

8 . 从下面的方框中选择合适的词或短语，根据需要用适当形式补全句子。

publish,   composer,   periodically,   establish,   balance,   brush up on not hesitate to do,   (be) known as,   a photographic memory,   jump to one's feet,

1. Ludwig van Beethoven is regarded as one of the greatest ________ in the history of music.
2. Roots & Shoots is an institute ________ in the early 1990s by Dr. Jane Goodall.
3. One of the golden rules to increase how much we remember is to review the material ________, especially during the first day after learning.
4. So far, the scientist and writer ________ five books.
5. A person with ________ could remember every detail of a picture, a book or an event many years later.
6. The boy is going to the library to revise for an English exam next week. He still needs to ________ some language points.
7. Among the students in our school, only a few have a ________ diet.
8. Hearing that the Chinese Men's Basketball Team won the champion, the excited fans ________.
9. ________ the “Father of Hybrid Rice”, Yuan Longping has made remarkable contributions to China's agriculture.
10. The audience ________ applaud loudly as the famous musician walked out onto the stage for the first time.