题目

I am very happy that I had the chance to meet Mr. Brown,   46       moved into the house next door to me two years ago. Usually, he is dressed  47        some kind of tight and colorful suit, looking like  48       superman of comic books. However, everyone here thinks highly of him because he is very kind,   49        (friend) and generous. When we are in trouble, he is always willing   50        (give) us a hand. I still remember the rainy night when I was seriously ill in bed. He called a taxi and  51        (send) me to hospital wi 下列哪项不是种子萌发必备的环境条件（ ） A. 适宜的温度 B. 足够的水分 C. 充足的空气 D. 光照