根据所给汉语句子，写出下列英语句子空白处所缺单词的正确形式。（每空一词）

1．众所周知，刘翔是一名杰出的运动员。

As we all know, Liu Xiang is an o         athlete．

2．参观北大校园是我们这次旅行最精彩的部分。

Visiting the campus of Beijing University was the h         of our journey．

3．他通过投资房地产积累了大量的财富。

He has a        a big fortune by investing in real estate．

4．人类应该学会与大自然和谐相处。

Mankind should learn to live in h         with nature．

5．史密斯教授推荐的那些参考书你都读了吗?

Have you read all the reference books r        by Professor Smith?

6．昨天我因迟到向会议主席道歉。

    I a        to the chairman for being late yesterday.

7．里根被选为美国第三十二任总统。

       Reagan was e        as the thirty-second President of the United States.

8．炉子里发出的烟呛得我几乎透不过气来。

       The smoke from the stove almost c        me.

9．虽有西方影响, 中国的古老艺术并未因此而衰落。

       The arts of China have not d        in spite of Western influence.

10．他完全无视这一切, 好象它们根本不存在似的。

       He completely i        all these facts as though they never existed.