语法填空

    阅读下面短文, 按照句子结构的语法性和上下文连贯的要求, 在空格处填入适当的词或使用括号中词语的正确形式填空.

     Snake dishes have become popular  1  recent years. Snake meat in various flavors(风味) is often

seen in restaurant advertisements. Eating snake seems to be now in vogue(盛行), and   2   you haven't

eaten snake yet, you are considered " out of date". But I wonder whether all the trends are worth  3    

(follow).

    Some people may defend themselves   4  saying that snake meat is nutritious. But these people don't

realize that many parasites (寄生虫),  5   (find) inside snakes, will do harm to our health.

   According to a survey, about 1,000 tons of snakes are eaten every year in China and sometimes as

many as 10 tons of snakes   6  (serve) on dinner tables in Shenzhen in a single day!

    These figures warn us that if no   7   (act) is taken, the number of snakes will drop and that will make    8  increase in mice and worms population,   9   will result in a decrease (减产) of crops output.

Who will see such tragedy happen?

    So let's start not to eat snakes any more because " to protect the snake is to protect   10   ."