题目内容：
下面是一节高中英语课堂教学片段实录。
T: Arm yourself with sunscreen, sunglasses and a hat in a period of hot weather.
S1: How can you arm yourself? You already have two arms
— how do you put on more?
T: Can we figure out the meaning of “arm” from the text? Look for another place where the word “sunscreen” appears. S2: In this sentence: “Health experts warned people, when outside, to apply sunscreen with a sun protection factor…”
S3: So I think “arm yourself” is kind of “apply”. S1: Oh, that makes sense. Is he right?
T: I could answer you, but I’d like you to find out the meaning of “arm” in the dictionary.
…
T: Got it? Can you explain it in English?
S4: Yes, it’s a verb, different from the noun “arm”, meaning to provide yourself or others with weapons or to provide what you need for a task.
T: Nicely done!
根据上面提供的信息，回答下列问题：
（1） 该教学片段的语言教学目标和策略目标分别是什么？（8 分）
（2） 该教师采取了哪三种方法达成上述目标（12 分）
（3） 该教师教学的一个优点和一个缺点分别是什么？（10 分）
参考答案：
答案解析：