问题
填空题
伽玛射线的防护材料一般用()而中子射线的防护材料一般用()。
答案
参考答案:铅、含钥石蜡
伽玛射线的防护材料一般用()而中子射线的防护材料一般用()。
参考答案:铅、含钥石蜡
Sally is a nice girl. 小题1: She isn’t tall. 小题2: She has two big eyes and a big nose. Her mouth is small. 小题3: Her hair is short and brown. 小题4: But today she is in a yellow T-shirt, blue pants and brown shoes. She has a white cat. 小题5: 任务型阅读:把A—E五个句子填入空白处。(5分)
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