在进行“探究凸透镜成像的规律”的实验时，把一支点燃的蜡烛放在距离凸透镜2倍焦距以外的地方，调节光屏位置，可找到一个清晰的像，这个像是图的（　　）

已知$f\left(x\right)$为$R$上奇函数，当$x\ge 0$时,$f\left(x\right)=x^2+2x$，则当$x<0$时，$f\left(x\right)=$(     ).

    The O. Henry Museum

    The aim of the O. Henry Museum is to collect, preserve, and interpret artifacts，works and archival (档案的) materials relative to the author, for literary» educational, and historical purposes that are accessible to the public. The museum was set up in 1934, under the authority of the City of Austin, and is both a National Register Property and a National Literary Landmark.

    The O. Henry Museum is open from Wednesday to Sunday, noon to 5:00 pm. Admission is free. Tours are also available for free. Please contact the museum at least one week in advance to schedule a tour for a group of 10 or more. Metered parking is available on the street in front of the museum. The museum's gift shop has for sale T-shirts, coffee mugs, DVDs, and an array of books by and about O. Henry.

    Group tours:

    We ask for one-week advance notice of groups more than 10 people, including schools, church groups, and organizations.

    Donations:

    Donations greatly benefit the museum and its programs. Inquire about contributing.

    Volunteer:

    Contact us about volunteering at the museum. We are currently in need of a gardener and a volunteer docent (讲解员).

    Staff:

    Valerie Bennett, Curator valerie. bennett@ci. austin. tx. us

    Michael Hoinski, Culture & Arts Education Specialist michael. hoinski@ci. austin. tx. us

    Elizabeth Taylor, Docent

    Location: 409 East Fifth Street, Austin, Texas 78701