Unit 4 Astronomy- the science of the stars reading课时作业

阅读下列短文，从每题所给的四个选项中，选出最佳选项，并在答题卡上将该选项涂黑。

　　　　　　　　　　　　　　　　A

　A man thirsts for adventure. Often the journey is the destination itself, and you can learn a lot from a brief adventure into the wild. Here are four types of outdoor adventures that every man should attempt to take.

1. The Ascent(登高)

　Mountain climbing and backpacking is one way to truly test your limits. It's a test of mental and physical strength. Besides, it often requires months of preparation. There are plentiful famous mountains notable for being extremely challenging for even the most dedicated climbers. The one thing they all have in common is that they attract a certain type of a person: one with a desire to defeat nature.

2. The Solo(单独的) Trip

　Going out into the wild, alone, is one of the scariest things a lot of people could ever imagine. If you take proper precautions, a solo trip can be a very freeing and rewarding experience. Particularly if you have some heavy things going on in your life - perhaps a failing relationship, switching careers, or financial conflict - getting away from everyone and everything can put you in tune with nature, and with yourself.

3. The Open Ocean

　Whether you find yourself in a kayak(皮船), sailboat, or any other kind of water boat, getting out on the water arouses some very special feelings. Nothing quite compares to having a gentle wind in your face, as you stare out at the vast and glassy expanse of the open water.

4. Endurance(耐力) Challenge

This is when you're serious about putting your life on hold, and getting away from it all. Endurance, in this case, can mean a number of things.

Trips like this can last months, and include thousands of miles. But they will test