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问题 单项选择题

建成区的定义是从表面到（）

A、肿瘤前表面的区域

B、肿瘤中心的区域

C、肿瘤后表面的区域

D、最大剂量深度点的区域

E、电离室中心的区域

答案

参考答案：D

单项选择题

HBsAb阳性说明（）

A．慢性或迁延性乙型肝炎活动期

B．乙型肝炎恢复期或接种乙肝疫苗已产生的效果

C．乙型肝炎患者病情为活动期

D．多见于HBeAg转阴的患者

E．患者血液有较强的传染性
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填空题

Questions 9-13


·You will hearfive people giving reasons why children learn their mother tongue so well.
·Before you listen, read the list of statements, five of which are summaries of what they were saying.
·Then listen carefully and match the statements (A-F) with the people who said them (9-13) respectively.
·There is one extra statement that you don’t need to use. You will hear the passage twice.
9. Maggie: ______
  • A. The time of their learning the mother tongue is the most
    favorable of all.
    10. Cherry: ______
  • B. Children hear their native language spoken always in its
    genuine form.
    11. Mike: ______
  • C. Children have private lessons all the time to learn their mother
    tongue.
    12. Hazel: ______
  • D. Children hear their native language spoken in all possible
    situations.
    13. Jody: ______
  • E. Children have special teachers to teach them.
  • F. Children have flexible organs and sensitive ear.
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