题目内容：

阅读下面短文，掌握其大意，选择最佳选项。

My parents usually celebrate a special day by enjoying a special kind of ice wine called Canadian ice wine.

My mother _________ told me the story of ice wine. To make it, people must freeze grapes on the vine（葡萄树）. You might think this is strange, __________ it is true. Sometimes, a great new product is invented by accident. And that’s exactly _________ we got ice wine.

In the 1700s in Germany, a man was away from __________ farm in the autumn. The weather suddenly turned _________ and his grapes froze. When he tasted the grapes, to his _________, the grapes tasted so sweet. Then, he _________ to use these grapes to make some wine. Guess what? People really liked his wine. For two centuries, _________ was the only place making ice wine. Then a Canadian got the idea that this kind of wine could be _________ in Canada. After all, the winters are cold in Canada and that’s the main _________ for making ice wine. After hard work, some grape farmers _________ the best process, and soon Canadian ice wine began to be sold all over the world.

The story of ice wine got me thinking.  What other inventions came about _________? It’s really hard to imagine the world _________ penicillin(青霉素) that has saved millions of lives. And the microwave has certainly changed the way we _________ .

Life is sometimes like that. Something even better comes along _________ we keep our eyes and mind open.

1.A. once    B. also    C. only    D. never

2.A. and    B. but    C. if    D. so

3.A. why    B. when    C. how    D. where

4.A. his    B. our    C. your    D. her

5.A. hot    B. wet    C. dry    D. cold

6.A. sadness    B. surprise    C. worry    D. shyness

7.A. refused    B. forgot    C. decided    D. failed

8.A. Canada    B. England    C. France    D. Germany

9.A. found    B. produced    C. sold    D. ordered

10.A. requirement    B. achievement    C. instrument    D. development

11.A. gave up    B. made up    C. cared about    D. found out

12.A. by heart    B. in half    C. by accident    D. in secret

13.A. among    B. through    C. except    D. without

14.A. cook    B. sleep    C. rest    D. exercise

15.A. because    B. if    C. unless    D. though