Directions： Decide which of the choices given below would correctly complete the passage if inserted in the corresponding blanks.    Select the correct choice for each blank.

Have you ever wondered what our future is like?Practically all people _1_ a desire to predict their future _2_.Most people seem inclined to _3_ this task using causal reasoning.First we _4_ recognize that future circumstances are _5_ caused or conditioned by present ones.We learn that getting an education will _6_ how much money we earn later and that swimming beyond the reef may bring an unhappy _7_ with a shark.

　　Second,people also learn that such _8_ of cause and effect are probabilistic(可能的) in nature.That is,the effects occur more often when the causes occur than when the causes are _9_, but not always.Thus,students learn that studying hard _10_ good grades in most instances,but not every time.Science makes these concepts of causality and probability more _11_ and provides techniques for dealing _12_ then more accurately than does causal human inquiry.In looking at ordinary human inquiry,we need to _13_ between prediction and understanding.Often,even if we don't understand why,we are willing to act _14_ the basis of a demonstrated predictive ability.

　　Whatever the primitive drives _15_ motivate human beings,satisfying them depends heavily on the ability to _16_ future circumstances.The attempt to predict is often played in a _17_ of knowledge and understanding.If you can understand why certain regular patterns _18_,you can predict better than if you simply observe those patterns.Thus,human inquiry aims _19_ answering both "what" and "why" question,and we pursue these _20_ by observing and figuring out.
　　
1. [A]exhibit [B]exaggerate [C]examine [D]exceed
　　
2. [A]contexts [B]circumstances [C]inspections [D]intuitions
　　
3.[A]underestimate [B]undermine [C]undertake [D]undergo
　　
4. [A]specially [B]particularly [C]always [D]generally
　　
5. [A]somehow [B]somebody [C]someone [D]something
　　
6. [A]enact [B]affect [C]reflect [D]inflect
　　
7. [A]meeting [B]occurrence [C]encounter [D]contact
　　
8. [A]patterns [B]designs [C]arrangements[D]pictures
　　
9. [A]disappointde [B]absent [C]inadequate [D]absolute
　　
10.[A]creates [B]produces [C]loses [D]protects
　　
11.[A]obscure [B]indistinct [C]explicit [D]explosive
　　
12.[A]for [B]at [C]in [D]with
　　
13.[A]distinguish [B]distinct [C]distort [D]distract
　　
14.[A]at [B]on [C]to [D]under
　　
15.[A]why [B]how [C]that [D]where
　　
16.[A]predict [B]produce [C]pretend [D]precede
　　
17.[A]content [B]contact [C]contest [D]context
　　
18.[A]happen [B]occur [C]occupy [D]incur
　　
19.[A]at [B]on [C]to [D]beyond
　　
20.[A]purposes [B]ambitions [C]drives [D]goals