问题 多选题
氧气钢瓶充气后压强高于外界大气压,假设缓慢漏气时瓶内外温度始终相等且保持不变,氧气分子之间的相互作用.在该漏气过程中瓶内氧气(  )

A.分子总数减少,分子总动能不变

B.密度降低,分子平均动能不变

C.吸收热量,膨胀做功

D.压强降低,不对外做功

答案

BC

多项选择题
阅读理解

It happened to me recently that I was telling someone how much I had enjoyed reading Barack Obama’s Dreams from My Father and how it had changed my views of the current US president. The person I was talking to agreed with me that it was, in his words, “a wonderfully written book”. However, he then proceeded to talk about Mr. Obama in a way that suggested he had no idea of his background at all. I sensed that I was talking to a book liar.

And it seems that he is not the only one. Clearly two thirds of people have lied about reading a book which they haven’t. In the World Book Day survey, Dreams from My Father is at number 9. The survey lists top ten books, and various authors, which people have lied about reading. As I’m not one to lie too often, I’ll admit here and now that I haven’t read the entire ten books. But I am pleased to say that I have read the book at number one, George Orwell’s 1984. I think it’s absolutely outstanding.

Asked why they lied, the most common reason was to impress someone they were speaking to. This could be difficult if the conversation became more in depth!

The World Book Day survey also has some other interesting information in it. It shows that many people lie about having read classical works by Jane Austen, the Bronte sisters, Charles Dickens and so on. But when asked which authors they actually enjoy, they named J.K. Rowling, Jilly Cooper, and Stephen King (ah, the big sellers, in other words). Forty-one percent of people asked admitted they turned to the back of the book to read the end before finishing the story.

So which books have you lied about reading — if any — and which is your favourite?

1.The main reason why people lie about reading is to _________.

A. make fun of the listener                 B. impress the listener

C. please the listener                      D. interest the listener

2.The underlined word “proceeded” in the passage probably means “_________”.

A. wanted           B. happened         C. continued            D. stopped

3.What does the World Book Day survey show?

A. Nearly half of the people surveyed didn’t read through a whole classical book.

B. People don’t like Dreams from My Father and George Orwell’s 1984.

C. Few people lie about having read classical works by Jane Austen.

D. People usually enjoy reading books by Charles Dickens.

4.What is the best title for the passage?

A. Are You a Book Liar?                 B. Readers Are All Liars

C. World Book Day                       D. Dreams from My Father