第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
A
 
Have you always wanted to discover the night sky but just don't know where to start?If so,then Back Garden Astronomy SkyatMight , Week is for you!
Launching at the start of March,this new beginner's guide from BBC Sky at Night Magazine will introduce the wonders of  Earth's constant companion in space,the Moon,in easy-to-do, nightly observing instalments.
Just sign up and each day from Monday 2 to Monday 9 March we'll send you a no-nonsense email newsletter that will help you discover the wonders of our planet's natural satellite.We'll show you how to judge the Moon's movement across the sky,and introduce you to some of the most spellbinding sights on its surface.
We'll guide you to the Moon's most dramatic craters and seas,allowing you to discover for  yourself the rugged locations that attracted the Apollo astronauts.
Each day during Back Garden Astronomy Week you'll also get essential observing tips and a fascinating insight into the Moon-explaining everything from what's behind its ever-changing phases to how old we think it is.
Sign up today to start your journey of discovery and we'll send you a FREE 62-page digital  starter pack including a Guide to the Moon before Back Garden Astronomy Week starts!
SIGN UP TODAY!
Visit www.skyatnightmagazine.com/backgarden to sign up in a few easy steps.
21.Who is the Back Garden Astronomy Week intended for?
A.Researchers studying the universe.
B.Anyone interested in space.
C.Teenagers interested in the Moon.
D.New beginners interested in the Moon.
22.After signing up,what can you receive from this project before Monday 2?
A.Essential observing tips.
B.A free Guide to the Moon.
C.A no-nonsense email newsletter.
D.A chargeable digital starter pack.
23.Where can you most probably read this passage?
A.On a website.
B.On a university bulletin board.
C.In a text book.
D.In a travel guide book.
21~23DBA