11.  Although the two spacecraft are not designed to search for life, they will seek out conditions that could support life.

12.  One is searching for evidence of past life on Mars; another is understanding Martian weather in an effort to learn more about the past and future climate of the earth; and the third is understanding the minerals and other resources that could support future exploration of Mars by people.

13.  Instruments on the spacecraft will search for it.

14.  And it will search for a magnetic field.

15.  Nowadays , more and more undergraduates begin to search their soul partner during the staying in university , which cause a hot discussion .

16.  Nowadays, with the increasing of spare time, people try to search the beauty of themselves, thus causing quantities of beauty contests.

17.  The most prominent contribution Internet has made to the world is to offer every one such a convenient access to information, thanks to which, we are able to search for useful reference and gain the knowledge of current news easily.

18.  We learn things through reading books, but mostly, we learn by communicating with others, as you spend much more time communicating with others rather than reading or searching things from the Internet.

19.  With the development of the world, people are searching for a higher level of enjoyment.

20.  To search for the answer, I think there are several reasons should be claimed.