一、根据句意及提示填写单词
1. (玉米) is one of the most widely grown crops in the world.
2. The path up the mountain was (崎岖的) and full of rocks, so we had to walk carefully.
3. I would (非常) appreciate it if you could give me some advice on this matter.
4. As middle school students, we should study hard to build a modern and strong (社会主义的) country.
5. When choosing (住房), it is important to consider both the cost and the location.

1. Corn
2. rough
3. greatly
4. socialist
5. housing

【分析】这类题需结合句意、中文提示，同时依据句子结构判断单词的正确词性和形式：1题需填名词作主语；2题需填形容词修饰名词；3题需填副词修饰动词；4题需填形容词修饰名词；5题需填名词作宾语。
【解析】1. 句意：玉米是世界上种植最广泛的作物之一，“玉米”对应的名词是Corn，作主语，故填Corn；2. 句意：上山的路崎岖且满是石头，所以我们得小心行走，“崎岖的”修饰名词path，需用形容词rough，故填rough；3. 句意：如果你能在这件事上给我一些建议，我会非常感激，“非常”修饰动词appreciate，需用副词greatly，故填greatly；4. 句意：作为中学生，我们应努力学习建设现代化的社会主义强国，“社会主义的”修饰名词country，需用形容词socialist，故填socialist；5. 句意：选择住房时，考虑成本和位置很重要，“住房”作choose的宾语，需用名词housing，故填housing。
【答案】1. Corn 2. rough 3. greatly 4. socialist 5. housing
【知识点】英语单词拼写、词性辨析、名词/形容词/副词用法
【点评】本题考查基础核心词汇的拼写及词性运用，是英语学习的基础题型，需准确掌握词汇的不同词性形式，结合句子结构判断正确形式，难度较低。
【难度系数】0.2