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问题 单项选择题 A1/A2型题

线性能量传递（LET）与氧增强比的关系是（）

A.无关

B.有些关系

C.有关系

D.关系不明确

E.有极重要的关系

答案

参考答案：E

解析：OER通常随LET值的增加而降低。

阅读理解

暑假来临了，下面是Cindy下周的日程安排，根据表格补全短文。

      This is Cindy's plan for her next week. On Monday she's going to have a picnic with ____________

girls. She's going to play ping-pong with her friends on Tuesday. She's going to ____________ at 9: 30 on

Thursday morning. On Friday she has to stay at home to read books and ____________. On Sunday she will

____________ with her mother. Then she will help her mother do housework. Next week she ____________ 

will three times (3次).
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多项选择题

举手示意客户时（）

A、迅速举起

B、迅速放下

C、四指并拢，速度适中，手臂直直举起

D、面带微笑，精神面貌良好欢迎客户
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