题目内容：

Directions : After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word, for the other blanks, use one word that best fits each blank.

One of the first questions young children ask is “Why?” It is human nature to want 1.(find) out why things are the way they are. You can find out “Why” by turning the question into a hypothesis (假设) for 2. experiment.

3. example, suppose you have been trying to grow tomato plants, but insects keep destroying 4.. Someone tells you that 5. (put) large strips of colored cloth around the plants will keep insects away. Your question might be “Do certain colours of cloth keep insects away?” Then you’d begin your experiment. The first step would be to place different-colored strips of cloth around all of the plants except one. Then, as regular intervals, you would observe and record and note6.the plant had any insect damage or not.

This experiment may prove that the answer to your question is “No, it is not different-colored strips of cloth 7. keep away insects.” Or you may find that answer is “Yes, certain insects are kept away by blue cloth, but not yellow cloth.” ...... 8. you have found, you are well on your way to understanding how you can use scientific thinking to solve a problem in you own life.