（A）根据句意和汉语注释，写出单词的正确形式，并将答案写在答卷上。
________(条件) on Mars are very hard so there is no life there.
People enjoy Chinese food because it has different ______ (味道) and is usually very delicious.
A nuclear（核）war is surely _________(残酷) than any other kind of war in the human history.
Now more and more         (大学) students can make money to support their daily life.
（B）根据句意，写出括号内所给单词的正确形式，并将答案写在答卷上。
My classmates and I often buy __________（we）healthy food at the supermarket.
The scientist died in his _________ (forty). What a pity! He should be taken good care of.
Would you please help us describe one of the most famous ___________（direct）appearance in English?
With the         (develop) of science, we can enjoy life better.