单选题:What was the author's purpose when writing this passage? 题目分类:英语四级 题目类型:单选题 查看权限:VIP 题目内容: What was the author's purpose when writing this passage? 参考答案: 答案解析:
Why is a special substance painted on the tree? Why is a special substance painted on the tree? 分类:英语四级 题型:单选题 查看答案
Trees become unhealthy if the gardener__________. Trees become unhealthy if the gardener__________. 分类:英语四级 题型:单选题 查看答案