好的！下面给你**标准答案**和**最终可运行程序**。

# PART 1：选择题答案

1. a
2. c
3. d
4. b
5. d
6. d

---

# PART 2：编程

## 1) 游乐园身高/年龄判定（最终程序）

```python
# Amusement park eligibility checker
age = int(input("Enter your age: "))

if age >= 9:
    height = float(input("Enter your height in cm: "))
    if height > 130:
        print("You may go on this ride!")
    else:
        print("You are too short for this ride.")
else:
    print("You are too young for this ride.")
```

## 2) 找错并修正（4处错误已修）

原代码中的问题：

* `=>` 应为 `>=`（语法错误）
* `else if` 应为 `elif`（语法错误）
* 将整数与字符串比较：`userScore > "600"` 应与整数比较（类型错误）
* 打印时建议规范金额格式（逻辑/输出规范改进）

修正后的完整代码：

```python
IDEAL_CREDIT_SCORE = 720

userScore = int(input("Please enter your credit score: "))
housePrice = float(input("Please enter the price of the house: "))

if userScore >= IDEAL_CREDIT_SCORE:
    downPayment = 0.10 * housePrice
elif userScore < IDEAL_CREDIT_SCORE and userScore > 600:
    downPayment = 0.20 * housePrice
else:
    downPayment = 0.30 * housePrice

print("Your down payment is: ${:.2f}".format(downPayment))
```

需要的话我也可以给你一些快速测试用例，帮你验证输出是否符合预期。