阅读理解。 Years ago, if a person had some problems in his life, he might go home and write in his diary. Now he might go onto the Internet and write about them in a blog (博客). Differences between a blog and a diary Usually, a person thinks of his diary as a book full of secrets. He does not want to share. But in the blog, anyone can read what he writes. Problems with blogging The biggest problem with blogging is that anyone can read what you write. It is easy to hurt others'feelings in a blog. Because we do not always think about things carefully before we write about our days. So we have to be very careful about what we write. Keeping in touch with friends Blogging has both good and bad points of course. People choose to blog because they know that their friends will read what they write. Blogs are a very good way to write about daily life, if people are careful about what they write. However, I still prefer (更喜欢) writing in my diary! 1.What's the difference between blogs and diaries according to the passage? [     ] A.Blogs can be read by others while diaries only by writers themselves. B.Blogs are used by young people while diaries are kept by old people. C.Blogs are always good while diaries are sometimes bad for writers. D.Blogs are a good way to write about life while diaries about other things. 2.It is easy to hurt others' feelings in blogs, because people _____. [     ] A.usually write about their daily life there B.only write something bad about others there C.don't always think carefully before writing there D.play tricks there on each other 3.Blogging can help us _____. [     ] A.write better diaries. B.do well in exams. C.learn how to use a computer. D.know more about the people around us 4.We can learn from the passage that _____. [     ] A.the writer will choose to blog so that others can keep in touch with him B.the writer would rather keep diaries than write in a blog C. the writer has never blogged because he hates blog D. the writer doesn't like her sister's writing in a blog