问题
单项选择题
最可能形成盖层的是（）。
A、渗透性好的砂岩
B、孔隙度高的碎屑岩
C、致密的粘土岩
D、上覆水层
答案
参考答案：C
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最可能形成盖层的是（）。
A、渗透性好的砂岩
B、孔隙度高的碎屑岩
C、致密的粘土岩
D、上覆水层
参考答案：C
| 完形填空 Get Yourself Lost Travelers to new cities are often told to start their trip with a bus tour.The thinking is that they can then __1__to the places that interested them.Nonsense! What you see from the __2__of a moving bus is unreal and completely removed from the authentic sights,sounds and __3__outside. Be adventurous! The best way to experience any place is __4__ and with absolutely no travel __5__. Simply go wherever your feet and your __6__ lead you.You eventually will get to the same sites that are on the bus tour-the museums,the monuments city hall-but will have __7__much more.You will have felt the contemporary life of the city. "But what if I get lost?" People might ask.No one gets __8__ lost in a major city.Eventually,you can find your way back to a wellknown location.If it frightens you to be "lost",just find a taxi and go back to where you __9__.However,the nicest things can happen if you get lost.You stop at a sidewalk caf? to __10__ and relax.You ask instructions of the local people at the __11__ table.And even if they don't speak your language,your trip becomes more __12__because of the experience. So next time you see a poster advertising an introductory bus tour,__13__your money.__14__,wander on your own.I __15__you a time you'll remember with great pleasure. | ||||
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