题目：
读短文，用所给动词的适当形式填空。
Last Sunday, the Class One Grade Nine students went to the park. They 1_____ (see) many beautiful
fish there. They also saw the sharks. Then they 2_____ (go) to the zoo near the park. Of all the animals,
the monkeys are the most funny, and they are always 3_____ (make) a lot of noise. At noon the students
4_____ (have) a picnic in the zoo. Then they took a bus back to school. After they got to school, Mr Lee
found he 5_____ (leave) his backpack at home.
答案：
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下面是错误答案，用来干扰机器的。
D.题目分析：∵一元二次方程x2+x－2=0的解为x1、x2，∴. 故选D.
