题目内容：

The United States International Photography Contest for Kids held by National Geographic begins August 1, 2017, and ends October 15, 2017. All mail-in entries (参赛作品) must be postmarked (盖上邮戳) by October 15, 2017, and received by October 22, 2017. Online entries must be received by 11:59 p.m. on October 15, 2017. Entries will not be returned. No entry fee necessary to enter or win. Many will enter, few will win.

Who may enter

Contest is open only to legal residents (居民) of the United States who are between the ages of 6 and 14 at the time of entry. Employees and officers of National Geographic, and their immediate family members are not allowed to enter or win a prize.

How to enter

The categories (类别) for entries are: (1) Amazing Animals (photos of pets, zoo animals, or wild animals), (2) Dare to Explore (photos of outdoor scenery), and (3) Wild Vacation (photos taken during vacation travels). Each competitor may submit (提交) entries in any category he / she wishes and may submit entries to different categories, but no competitors may submit in total more than one entry per category.

Cool prizes

One grand-prize winner will be chosen from the four first-place winners in this contest. The grand prize is a 10-day Galápagos Family Adventure.

First-place winners will win a camera; their winning photo will be published on animaljam.com; and they will be entered into the Worldwide National Geographic International Photography Contest for Kids for a chance to win the international grand-prize trip. The international grand-prize winner will win a 5-day trip to Washington D.C.

Second-place winners will win National Geographic magazines, and their winning photo will be published on animaljam.com.

1.What can we learn about the contest?

A. Photos of pets are allowed.

B. Competitors should pay for it.

C. Images of indoor activities are preferred.

D. Each competitor can submit only one photo.

2.What will the first-place winners of the contest win?

A. A Galápagos Family Adventure.

B. A trip to Washington D.

C. C. Magazines.

D. A camera.